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Variants
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Stroke suspected, acute, arteriopathy, emergent treatment contraindicated, initial imaging 3183775
MRA head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
MRI head perfusion with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI head perfusion without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT head without IV contrast
1-10 mSv
☢☢☢ 		0.3-3 mSv [ped]
☢☢☢ 		May be appropriate
CTA head with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		May be appropriate
US duplex Doppler transcranial
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Arteriography cervicocerebral
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
MRA head with IV contrast
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
CT head perfusion with IV contrast
1-10 mSv
☢☢☢
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
SPECT or SPECT/CT brain perfusion
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate