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Home Chronic Extremity Joint Pain-Suspected Inflammatory Arthritis, Crystalline Arthritis, or Erosive Osteoarthritis
Variants
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Knee pain, chronic, erosive osteoarthritis suspected, radiography inconclusive, next imaging study 3196215
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
Image-guided aspiration knee

Varies
Varies 		Usually not appropriate
MRI knee without IV contrast
0 mSv
O 		0 mSv [ped]
O 		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
Bone scan whole body
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