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Transabdominal ultrasound will provide a panoramic view of the abdomen and pelvis and is noninvasive, whereas transvaginal ultrasound provides a more limited pelvic view and requires insertion of a probe into the vagina.Transabdominal ultrasound cannot reliably diagnose pregnancies that are less than 6 weeks gestation.
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Place a small amount of ultrasonic Visualize the longitudinal plane of the uterus (sagital section) and evaluate its' size.
It can be measured from the cervix to the fundus, AP diameter, and width.
Normal uterine volume is less than 100 cc (nulliparous patients) and less than 125 cc (multiparous patients).
Identify (if present), the gestational sac, yolk sac, fetus (or fetuses), presence or absence of fetal movement and fetal heart beat.
It records high-frequency sound waves that create an image (see Reference 4).