Pelvic Ultrasound and Transvaginal Ultrasound

What is the test?

Ultrasound uses sound waves instead of radiation to generate snapshots or moving pictures of structures inside the body. Ultrasound works like radar and sonar, which were developed in World War II to detect airplanes, missiles, and submarines that were otherwise invisible. After coating your skin with a lubricant to reduce friction. Then, a radiologist or ultrasound technician places an ultrasound transducer, which looks like a microphone, on your skin and moves it back and forth to get the right view. The transducer sends sound waves into your body and picks up the echoes of the sound waves as they bounce off internal organs and tissue. A computer transforms these echoes into an image that is displayed on a screen.

Pelvic organ ultrasound is used to monitor pregnancy, find cysts on your ovaries, examine the lining of your uterus, look for causes of infertility, and find cancers or benign tumors in the pelvic region. Depending on the view needed, the ultrasound sensor is placed either on your abdomen (pelvic ultrasound) or in your vagina (transvaginal ultrasound).

How do I prepare for the test?

Your doctor might ask you to drink a few glasses of water before the test because a full bladder lifts your intestines out of the way and provides a clearer view of your pelvic organs. If you're having a transvaginal ultrasound and have a tampon in place, you'll need to remove it before the test.

To continue reading this article, you must login.
  • Research health conditions
  • Check your symptoms
  • Prepare for a doctor's visit or test
  • Find the best treatments and procedures for you
  • Explore options for better nutrition and exercise
Learn more about the many benefits and features of joining Harvard Health Online »