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Scenario

Scenario ID

Procedure

Adult RRL

Peds RRL

Appropriateness Category

Osteonecrosis suspected, knee, radiography normal, next imaging study

3195726

MRI knee without IV contrast

0 mSv
O

0 mSv [ped]
O

Usually appropriate

MRI knee without and with IV contrast

0 mSv
O

0 mSv [ped]
O

May be appropriate

CT knee without IV contrast

<0.1 mSv
☢

0.03-0.3 mSv [ped]
☢☢

May be 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

Bone scan knee

1-10 mSv
☢☢☢

Usually not appropriate