Vaginal bleeding is not uncommon in the first trimester of pregnancy. Ultrasound is the
foremost modality for evaluating normal development of the gestational sac and embryo and
for discriminating the causes of bleeding. While correlation with quantitative βHCG and
clinical presentation is essential, sonographic criteria permit diagnosis of failed pregnancies,
ectopic pregnancy, gestational trophoblastic disease and spontaneous abortion. The
American College of Radiology Appropriateness Criteria guidelines have been updated to …

"ACR appropriateness Criteria® first trimester bleeding" by Ann Podrasky … ACR
appropriateness Criteria® first trimester bleeding …