Fig. 1From: Automated prediction of early spontaneous miscarriage based on the analyzing ultrasonographic gestational sac imaging by the convolutional neural network: a case-control and cohort studyData enrollment in the present study. This figure is a flowchart showing the strategies by which we searched for the database to enroll the study population. GW: gestational week; CNN: convolutional neural networks; FHR: fetal heart rate; CRL: crown-rump length; US: ultrasoundBack to article page