Home Suspected Osteomyelitis, Septic Arthritis, or Soft Tissue Infection (Excluding Spine and Diabetic Foot)
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Septic arthritis suspected, knee, radiography findings suggest soft tissue swelling, next imaging study 3195535
US knee
0 mSv
O
0 mSv [ped]
O
Usually appropriate
Image-guided aspiration knee

Varies

Varies
Usually appropriate
MRI knee without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually appropriate
MRI knee without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually appropriate
CT knee with IV contrast
<0.1 mSv
0.03-0.3 mSv [ped]
☢☢
Usually appropriate
CT knee without IV contrast
<0.1 mSv
0.03-0.3 mSv [ped]
☢☢
May be 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