Ultrasound diagnosis using contact compound B-scan technique in obstetrics.
D005260:Female; D005333:Fetus; D006801:Humans; D008722:Methods; D010920:Placenta; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis*; D011258:Pregnancy Tests; D014427:Twins; D014463:Ultrasonography