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Home Suspected Primary Bone Tumors
Variants
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Primary bone tumor suspected, knee, lesion on radiography, benign appearance, not osteoid osteoma, next imaging study 3109101
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 without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		May be appropriate
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Image-guided biopsy knee

Varies
Varies 		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
Bone scan whole body
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Bone scan whole body with SPECT or SPECT/CT knee
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate