Ventriculomegaly
(Courtesy of Dr. Seaward and Dr. Ryan, Mt Sinai Hospital)
Monochorionic Twins
Monochorionic, diamniotic twins T sign
(Courtesy of Dr. Seaward and Dr. Ryan, Mt Sinai Hospital)
Dichorionic Twins
Dichorionic, diamniotic twins lamdba sign
(Courtesy of Dr. Seaward and Dr. Ryan, Mt Sinai Hospital)
Placenta Previa
Placenta (P) covers the os. Crosses (+) approximate the cervical length and the bladder (B) is seen on the right.
(Courtesy of Dr. Seaward and Dr. Ryan, Mt Sinai Hospital)
Nuchal Translucency
(Courtesy of Dr. Seaward and Dr. Ryan, Mt Sinai Hospital)
Intrauterine Pregnancy
Transabdominal obstetrical ultrasound showing fetus developing within the amniotic sac.
Head
Head Circumference and Biparietal Diameter (Courtesy of Dr. W. Whittle)
Femur
Femur Length (one end of the femur is not visible) (Courtesy of Dr. W. Whittle)
Ectopic Pregnancy
Transvaginal ultrasounds showing an ectopic pregnancy (left) and a normal intrauterine pregnancy (right). In the image on the left, the uterus is empty, and there is a fetus located in the pelvis (arrow). In the image on the right, a fetus is seen developing within the body of the uterus, surrounded by amniotic fluid (black). (Courtesy of Dr. N. Jaffer)
Crown-Rump
Crown-Rump Length (Courtesy of Dr. W. Whittle)
