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Variants
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Perianal fistula suspected, initial imaging 3194185
MRI pelvis without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT pelvis with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
US endoanal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI pelvis without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT pelvis without IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		May be appropriate
Radiography pelvis
0.1-1mSv
☢☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
Fluoroscopy contrast enema
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate
Fluoroscopy fistulography anus
1-10 mSv
☢☢☢
Usually not appropriate
CT pelvis without and with IV contrast
10-30 mSv
☢☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually not appropriate