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Home Suspected Osteomyelitis, Septic Arthritis, or Soft Tissue Infection (Excluding Spine and Diabetic Foot)
Variants
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Soft tissue infection suspected, knee, implanted extra articular surgical hardware, radiography normal, next imaging study 3195593
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
US knee
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
CT knee without IV contrast
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		May be appropriate
3-phase bone scan and WBC scan knee
10-30 mSv
☢☢☢☢
May be appropriate
FDG-PET/CT whole body
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		May be appropriate
WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
May be appropriate
WBC scan knee
10-30 mSv
☢☢☢☢
May be appropriate
Image-guided aspiration knee

Varies
Varies 		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
3-phase bone scan and WBC scan and sulfur colloid scan knee
10-30 mSv
☢☢☢☢
Usually not appropriate