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Home Imaging After Total Knee Arthroplasty
Variants
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Knee replaced, follow-up, symptomatic, initial imaging 3196562
Radiography knee
<0.1 mSv
☢ 		<0.03 mSv [ped]
☢ 		Usually appropriate
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
Image-guided aspiration knee

Varies
Varies 		Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Knee replaced, follow-up, asymptomatic, initial imaging 3196563
Radiography knee
<0.1 mSv
☢ 		<0.03 mSv [ped]
☢ 		Usually appropriate
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
Image-guided aspiration knee

Varies
Varies 		Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Knee replaced, infection suspected, radiography performed, next imaging study 3196565
Image-guided aspiration knee

Varies
Varies 		Usually appropriate
US knee
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		May be appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
May be appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
May be appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Knee replaced, pain, osteolysis suspected, no infection, radiography performed, next imaging study 3196568
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
May be appropriate
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Knee replaced, pain, instability suspected, no infection, radiography performed, next imaging study 3196567
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
May be appropriate
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Knee replaced, pain, aseptic loosening suspected, no infection, radiography performed, next imaging study 3196569
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
May be appropriate
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Knee replaced, pain, periprosthetic fracture suspected, radiography performed, next imaging study 3196572
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
May be appropriate
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Knee replaced, pain, hardware fracture suspected, radiography performed, next imaging study 3196571
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
May be appropriate
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Knee replaced, pain, measure component rotation, radiography performed, next imaging study 3196574
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Knee replaced, pain, patellar clunk syndrome suspected, radiography performed, next imaging study 3196581
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Knee replaced, pain, patellar tendon tears suspected, radiography performed, next imaging study 3196583
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Knee replaced, pain, periprosthetic soft tissue abnormality suspected, no infection, radiography performed, next imaging study 3196576
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Knee replaced, pain, quadriceps tendinopathy suspected, radiography performed, next imaging study 3196578
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Knee replaced, pain, nerve impingement suspected, radiography performed, next imaging study 3196580
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Knee replaced, pain, patellar tendinopathy suspected, radiography performed, next imaging study 3196577
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Knee replaced, pain, postoperative arthrofibrosis suspected, radiography performed, next imaging study 3196582
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Knee replaced, pain, quadriceps tendon tears suspected, radiography performed, next imaging study 3196584
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
Knee replaced, pain, soft tissue impingement suspected, radiography performed, next imaging study 3196579
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
Fluoroscopy knee
<0.1 mSv
☢
Usually not appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT arthrography knee
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢
Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoride PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate
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