ACR logo

ACR AC Portal

Home Multiple Gestations
Variants
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Multiple gestations suspected, dichorionic, first trimester, initial imaging 3197485
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Multiple gestations, dichorionic, first trimester, initial imaging 3197487
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Multiple gestations suspected, monochorionic, first trimester, initial imaging 3197486
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Multiple gestations, monochorionic, first trimester, initial imaging 3197488
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Multiple gestations, monochorionic, first trimester US performed, next imaging study 3197491
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Multiple gestations, dichorionic, first trimester US performed, next imaging study 3197490
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Multiple gestations, multichorionic higher order multiples, second trimester anatomy exam, follow-up imaging 3197493
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Multiple gestations, dichorionic twins, second trimester anatomy exam, follow-up imaging 3197494
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Multiple gestations, monochorionic twins, second trimester anatomy exam, follow-up imaging 3197496
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Multiple gestations, dichorionic twins, growth and antepartum surveillance 3197499
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Multiple gestations, multichorionic higher order multiples, growth and antepartum surveillance 3197498
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Multiple gestations, monochorionic twins, growth and antepartum surveillance 3197500
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Multiple gestations, monochorionic, discordance between fetuses, growth and antepartum surveillance 3197504
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Multiple gestations, dichorionic, discordance between fetuses, growth and antepartum surveillance 3197506
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Multiple gestations, multichorionic higher order multiples, abnormality, growth and antepartum surveillance 3197503
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Multiple gestations, monochorionic, abnormality, growth and antepartum surveillance 3197505
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Multiple gestations, dichorionic, abnormality, growth and antepartum surveillance 3197507
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Multiple gestations, multichorionic higher order multiples, discordance between fetuses, growth and antepartum surveillance 3197502
US duplex Doppler fetal middle cerebral artery
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US duplex Doppler fetal umbilical artery
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus biophysical profile
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US pregnant uterus transabdominal
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
US assessment for TTTS
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US cervix transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US echocardiography fetal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
US pregnant uterus transvaginal
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI fetal without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRI fetal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
© 2025