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Home Inflammatory Back Pain: Known or Suspected Axial Spondyloarthropathy
Variants
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Inflammatory back pain, thoracic and lumbar spine symptoms, axial spondyloarthritis suspected, initial imaging 3194619
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and thoracic and lumbar spine
1-10 mSv
☢☢☢
Usually appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US thoracic and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI thoracic and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI thoracic and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT thoracic and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT thoracic and lumbar spine with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT thoracic and lumbar spine without IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT thoracic and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, lumbar spine symptoms, axial spondyloarthritis suspected, initial imaging 3194621
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and lumbar spine
1-10 mSv
☢☢☢
Usually appropriate
US lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT lumbar spine with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT lumbar spine without IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, cervical spine symptoms, axial spondyloarthritis suspected, initial imaging 3194623
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and cervical spine
1-10 mSv
☢☢☢
Usually appropriate
US cervical spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI cervical spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI cervical spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT neck
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT cervical spine with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT cervical spine without and with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT cervical spine without IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, buttock symptoms, axial spondyloarthritis suspected, initial imaging 3194616
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and lumbar spine
1-10 mSv
☢☢☢
Usually appropriate
US lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT lumbar spine with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT lumbar spine without IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, cervical and lumbar spine symptoms, axial spondyloarthritis suspected, initial imaging 3194618
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and cervical and lumbar spine
1-10 mSv
☢☢☢
Usually appropriate
US cervical and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI cervical and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI cervical and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT cervical and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT cervical and lumbar spine with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT cervical and lumbar spine without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT cervical and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, cervical and thoracic spine symptoms, axial spondyloarthritis suspected, initial imaging 3194620
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and cervical and thoracic spine
1-10 mSv
☢☢☢
Usually appropriate
US cervical and thoracic spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI cervical and thoracic spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI cervical and thoracic spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT cervical and thoracic spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT cervical and thoracic spine with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT cervical and thoracic spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT cervical and thoracic spine without IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, complete spine symptoms, axial spondyloarthritis suspected, initial imaging 3194617
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and complete spine
1-10 mSv
☢☢☢
Usually appropriate
US complete spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI complete spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI complete spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT complete spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT complete spine with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT complete spine without and with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT complete spine without IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, thoracic spine symptoms, axial spondyloarthritis suspected, initial imaging 3194622
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and thoracic spine
1-10 mSv
☢☢☢
Usually appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US thoracic spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI thoracic spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI thoracic spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT thoracic spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT thoracic spine with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT thoracic spine without IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT thoracic spine without and with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Inflammatory back pain, complete spine symptoms, axial spondyloarthritis suspected, radiography performed, next imaging study 3194626
MRI sacroiliac joints and complete spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints and complete spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
May be appropriate
CT sacroiliac joints and complete spine without IV contrast
10-30 mSv
☢☢☢☢
May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and complete spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and complete spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and complete spine with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and complete spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, thoracic spine symptoms, axial spondyloarthritis suspected, radiography performed, next imaging study 3194631
MRI sacroiliac joints and thoracic spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints and thoracic spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT sacroiliac joints and thoracic spine without IV contrast
1-10 mSv
☢☢☢
May be appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and thoracic spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and thoracic spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints and thoracic spine with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and thoracic spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, thoracic and lumbar spine symptoms, axial spondyloarthritis suspected, radiography performed, next imaging study 3194628
MRI sacroiliac joints and thoracic and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints and thoracic and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
May be appropriate
CT sacroiliac joints and thoracic and lumbar spine without IV contrast
10-30 mSv
☢☢☢☢
May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and thoracic and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and thoracic and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and thoracic and lumbar spine with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and thoracic and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, cervical spine symptoms, axial spondyloarthritis suspected, radiography performed, next imaging study 3194632
MRI sacroiliac joints and cervical spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints and cervical spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
May be appropriate
CT sacroiliac joints and cervical spine without IV contrast
10-30 mSv
☢☢☢☢
May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and cervical spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and cervical spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical spine with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, lumbar spine symptoms, axial spondyloarthritis suspected, radiography performed, next imaging study 3194630
MRI sacroiliac joints and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT sacroiliac joints and lumbar spine without IV contrast
1-10 mSv
☢☢☢
May be appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints and lumbar spine with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, buttock symptoms, axial spondyloarthritis suspected, radiography performed, next imaging study 3194625
MRI sacroiliac joints and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT sacroiliac joints and lumbar spine without IV contrast
1-10 mSv
☢☢☢
May be appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints and lumbar spine with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, cervical and thoracic spine symptoms, axial spondyloarthritis suspected, radiography performed, next imaging study 3194629
MRI sacroiliac joints and cervical and thoracic spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints and cervical and thoracic spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
May be appropriate
CT sacroiliac joints and cervical and thoracic spine without IV contrast
10-30 mSv
☢☢☢☢
May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and cervical and thoracic spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and cervical and thoracic spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical and thoracic spine with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical and thoracic spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, cervical and lumbar spine symptoms, axial spondyloarthritis suspected, radiography performed, next imaging study 3194627
MRI sacroiliac joints and cervical and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints and cervical and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT sacroiliac joints and cervical and lumbar spine without IV contrast
1-10 mSv
☢☢☢
May be appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and cervical and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and cervical and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints and cervical and lumbar spine with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Inflammatory back pain, lumbar spine symptoms, axial spondyloarthritis suspected, radiography and mri sacroiliac joints negative, next imaging study 3194637
Radiography lumbar spine
1-10 mSv
☢☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
MRI lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT lumbar spine without IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
US lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT lumbar spine with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, cervical spine symptoms, axial spondyloarthritis suspected, radiography and mri sacroiliac joints negative, next imaging study 3194639
Radiography cervical spine
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
MRI cervical spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI cervical spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT cervical spine without IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
US cervical spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT neck
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT cervical spine with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT cervical spine without and with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, cervical and lumbar spine symptoms, axial spondyloarthritis suspected, radiography and mri sacroiliac joints negative, next imaging study 3194634
Radiography cervical and lumbar spine
1-10 mSv
☢☢☢
Usually appropriate
MRI cervical and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI cervical and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT cervical and lumbar spine without IV contrast
1-10 mSv
☢☢☢
Usually appropriate
US cervical and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT cervical and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT cervical and lumbar spine with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT cervical and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, cervical and thoracic spine symptoms, axial spondyloarthritis suspected, radiography and mri sacroiliac joints negative, next imaging study 3194636
Radiography cervical and thoracic spine
1-10 mSv
☢☢☢
Usually appropriate
MRI cervical and thoracic spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI cervical and thoracic spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT cervical and thoracic spine without IV contrast
10-30 mSv
☢☢☢☢
Usually appropriate
US cervical and thoracic spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT cervical and thoracic spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT cervical and thoracic spine with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT cervical and thoracic spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, thoracic spine symptoms, axial spondyloarthritis suspected, radiography and mri sacroiliac joints negative, next imaging study 3194638
Radiography thoracic spine
1-10 mSv
☢☢☢
Usually appropriate
MRI thoracic spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI thoracic spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT thoracic spine without IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
US thoracic spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT thoracic spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT thoracic spine with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT thoracic spine without and with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, buttock symptoms, axial spondyloarthritis suspected, radiography and mri sacroiliac joints negative, next imaging study 3194640
Radiography lumbar spine
1-10 mSv
☢☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
MRI lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT lumbar spine without IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
US lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT lumbar spine with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, complete spine symptoms, axial spondyloarthritis suspected, radiography and mri sacroiliac joints negative, next imaging study 3194633
Radiography complete spine

0.3-3 mSv [ped]
☢☢☢ 		Usually appropriate
MRI complete spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI complete spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT complete spine without IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
US complete spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT complete spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT complete spine with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT complete spine without and with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Inflammatory back pain, thoracic and lumbar spine symptoms, axial spondyloarthritis suspected, radiography and mri sacroiliac joints negative, next imaging study 3194635
Radiography thoracic and lumbar spine
1-10 mSv
☢☢☢ 		0.3-3 mSv [ped]
☢☢☢ 		Usually appropriate
MRI thoracic and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI thoracic and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT thoracic and lumbar spine without IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
US thoracic and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT thoracic and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT thoracic and lumbar spine with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT thoracic and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Axial spondyloarthritis, sacroiliac joints, disease progression, follow up imaging 3194641
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and lumbar spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints and lumbar spine with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and lumbar spine without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, cervical spine, disease progression, follow up imaging 3194655
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and cervical spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and cervical spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and cervical spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and cervical spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and cervical spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical spine with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical spine without IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, complete spine, disease progression, follow up imaging 3194643
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and complete spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and complete spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and complete spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and complete spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and complete spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and complete spine with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and complete spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and complete spine without IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, thoracic and lumbar spine, treatment response, follow up imaging 3194648
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and thoracic and lumbar spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and thoracic and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and thoracic and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and thoracic and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and thoracic and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and thoracic and lumbar spine with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and thoracic and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and thoracic and lumbar spine without IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, cervical and thoracic spine, treatment response, follow up imaging 3194650
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and cervical and thoracic spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and cervical and thoracic spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and cervical and thoracic spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and cervical and thoracic spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and cervical and thoracic spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical and thoracic spine with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical and thoracic spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical and thoracic spine without IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, lumbar spine, treatment response, follow up imaging 3194652
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and lumbar spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints and lumbar spine with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and lumbar spine without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, cervical and lumbar spine, disease progression, follow up imaging 3194645
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and cervical and lumbar spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and cervical and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and cervical and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and cervical and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and cervical and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints and cervical and lumbar spine with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical and lumbar spine without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, thoracic and lumbar spine, disease progression, follow up imaging 3194647
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and thoracic and lumbar spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and thoracic and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and thoracic and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and thoracic and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and thoracic and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and thoracic and lumbar spine with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and thoracic and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and thoracic and lumbar spine without IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, cervical and thoracic spine, disease progression, follow up imaging 3194649
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and cervical and thoracic spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and cervical and thoracic spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and cervical and thoracic spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and cervical and thoracic spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and cervical and thoracic spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical and thoracic spine with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical and thoracic spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical and thoracic spine without IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, thoracic spine, treatment response, follow up imaging 3194654
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and thoracic spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and thoracic spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and thoracic spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and thoracic spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and thoracic spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints and thoracic spine with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and thoracic spine without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and thoracic spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, sacroiliac joints, treatment response, follow up imaging 3194642
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and lumbar spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints and lumbar spine with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and lumbar spine without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, cervical spine, treatment response, follow up imaging 3194656
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and cervical spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and cervical spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and cervical spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and cervical spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and cervical spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical spine with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical spine without IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, cervical and lumbar spine, treatment response, follow up imaging 3194646
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and cervical and lumbar spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and cervical and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and cervical and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and cervical and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and cervical and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints and cervical and lumbar spine with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical and lumbar spine without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and cervical and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, lumbar spine, disease progression, follow up imaging 3194651
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and lumbar spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints and lumbar spine with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and lumbar spine without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, complete spine, treatment response, follow up imaging 3194644
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and complete spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and complete spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and complete spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and complete spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and complete spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and complete spine with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and complete spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints and complete spine without IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, thoracic spine, disease progression, follow up imaging 3194653
Radiography sacroiliac joints
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
Radiography sacroiliac joints and thoracic spine
1-10 mSv
☢☢☢
Usually appropriate
MRI sacroiliac joints and thoracic spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints and thoracic spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI sacroiliac joints without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US sacroiliac joints
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US sacroiliac joints and thoracic spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan with SPECT or SPECT/CT sacroiliac joints and thoracic spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT sacroiliac joints and thoracic spine with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and thoracic spine without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT sacroiliac joints and thoracic spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT sacroiliac joints without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Axial spondyloarthritis, spine ankylosis, thoracic and lumbar spine fracture suspected, initial imaging 3194659
Radiography thoracic and lumbar spine
1-10 mSv
☢☢☢ 		0.3-3 mSv [ped]
☢☢☢ 		Usually appropriate
MRI thoracic and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT thoracic and lumbar spine without IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
US thoracic and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI thoracic and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT thoracic and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT thoracic and lumbar spine with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT thoracic and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, spine ankylosis, lumbar spine fracture suspected, initial imaging 3194661
Radiography lumbar spine
1-10 mSv
☢☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
MRI lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT lumbar spine without IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
US lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT lumbar spine with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, spine ankylosis, cervical spine fracture suspected, initial imaging 3194663
Radiography cervical spine
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
MRI cervical spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT cervical spine without IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
US cervical spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI cervical spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT neck
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT cervical spine with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT cervical spine without and with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, spine ankylosis, cervical and lumbar spine fracture suspected, initial imaging 3194658
Radiography cervical and lumbar spine
1-10 mSv
☢☢☢
Usually appropriate
MRI cervical and lumbar spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT cervical and lumbar spine without IV contrast
1-10 mSv
☢☢☢
Usually appropriate
US cervical and lumbar spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI cervical and lumbar spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT cervical and lumbar spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT cervical and lumbar spine with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT cervical and lumbar spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, spine ankylosis, cervical and thoracic spine fracture suspected, initial imaging 3194660
Radiography cervical and thoracic spine
1-10 mSv
☢☢☢
Usually appropriate
MRI cervical and thoracic spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT cervical and thoracic spine without IV contrast
10-30 mSv
☢☢☢☢
Usually appropriate
US cervical and thoracic spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI cervical and thoracic spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT cervical and thoracic spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT cervical and thoracic spine with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
CT cervical and thoracic spine without and with IV contrast
10-30 mSv
☢☢☢☢
Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, spine ankylosis, thoracic spine fracture suspected, initial imaging 3194662
Radiography thoracic spine
1-10 mSv
☢☢☢
Usually appropriate
MRI thoracic spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT thoracic spine without IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
US thoracic spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI thoracic spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan with SPECT or SPECT/CT thoracic spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT thoracic spine with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT thoracic spine without and with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
Axial spondyloarthritis, spine ankylosis, complete spine fracture suspected, initial imaging 3194657
Radiography complete spine

0.3-3 mSv [ped]
☢☢☢ 		Usually appropriate
MRI complete spine without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT complete spine without IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
US complete spine
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI complete spine without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Bone scan whole body with SPECT or SPECT/CT complete spine
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT complete spine with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT complete spine without and with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢
Usually not appropriate
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