Home Osteonecrosis
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Osteonecrosis suspected, ankle, radiography normal, next imaging study 3195719
MRI ankle without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually appropriate
MRI ankle without and with IV contrast
0 mSv
O
0 mSv [ped]
O
May be appropriate
CT ankle without IV contrast
<0.1 mSv
0.03-0.3 mSv [ped]
☢☢
May be appropriate
CT ankle with IV contrast
<0.1 mSv
0.03-0.3 mSv [ped]
☢☢
Usually not appropriate
CT ankle without and with IV contrast
<0.1 mSv
0.03-0.3 mSv [ped]
☢☢
Usually not appropriate
Bone scan ankle
1-10 mSv
☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate