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Home Osteomyelitis or Septic Arthritis-Child (Excluding Axial Skeleton)
Variants
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Septic arthritis suspected, knee, initial imaging 3194974
US knee
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
Radiography knee
<0.1 mSv
☢ 		<0.03 mSv [ped]
☢ 		Usually appropriate
MRI knee without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI lower extremity 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 		May be appropriate
MRI lower extremity without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI whole body without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
(Disagreement)
MRI whole body without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
Bone scan whole body and 3-phase bone scan knee

3-10 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
Bone scan whole body
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate