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Variants
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Facial weakness, unilateral, isolated, initial imaging 3195216
MRI head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI orbits face neck without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRA head with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRA head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRA head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
(Disagreement)
MRI head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI orbits face neck without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
(Disagreement)
CT maxillofacial with IV contrast
0.1-1mSv
☢☢
May be appropriate
CT maxillofacial without IV contrast
0.1-1mSv
☢☢
May be appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
US neck
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI orbits face neck with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT head with IV contrast
1-10 mSv
☢☢☢ 		0.3-3 mSv [ped]
☢☢☢ 		Usually not appropriate
CT head without and with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
CT head without IV contrast
1-10 mSv
☢☢☢ 		0.3-3 mSv [ped]
☢☢☢ 		Usually not appropriate
CT maxillofacial without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CTA head with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
FDG-PET/CT skull base to mid-thigh
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate