While a standard pelvic ultrasound looks through the skin of your belly, a transvaginal scan is performed internally. This method bypasses the muscles and gas in the abdomen, allowing the sound waves to capture highly detailed pictures of the uterus and ovaries.
Common Indications for Transvaginal Ultrasound
Your doctor may request a Transvaginal Ultrasound for:
- Finding the cause of pelvic pain, severe cramping, or irregular bleeding.
- Looking for cysts on the ovaries, uterine fibroids, or polyps.
- Checking the exact placement of an intrauterine device (IUD).
- Investigating the causes of fertility issues.
- During early pregnancy, to confirm the heartbeat and rule out complications like an ectopic pregnancy.
What exactly does a Transvaginal Ultrasound show?
It shows the lining of the uterus (endometrium), the muscular walls of the uterus, the cervix, and both ovaries. Because the probe is placed so close to these organs, it can easily detect very small abnormalities that a belly scan might completely miss.
What happens during a Transvaginal Ultrasound procedure?
- You will be asked to undress from the waist down and will be given a sheet or gown for privacy.
- You will lie on your back on the exam table, bending your knees as you would for a standard pelvic exam.
- The Radiographer will use a special ultrasound wand (transducer) that is thin, round at the top, and roughly the diameter of a tampon.
- The wand is covered with a protective sheath and lubricating gel, and is gently inserted 2 to 3 inches into the vagina.
- The Radiographer will slowly angle the wand to get pictures from different views.
Do I need to prepare for a Transvaginal Ultrasound?
Unlike a scan over your belly, you do not need a full bladder for this test. In fact, you will be asked to completely empty your bladder right before the procedure begins so that you are comfortable and the organs are easy to see. If you are on your period, you will simply need to remove your tampon before the exam.
How long does a Transvaginal Ultrasound take?
The scan is fairly quick, usually taking about 15 to 30 minutes.
Are there different types of Transvaginal Ultrasound scans?
It is very common for a doctor to order both a transabdominal (over the belly) and a transvaginal scan during the same appointment. The belly scan gives a wide overview of the pelvis, while the transvaginal scan provides the zoomed-in details.
Will the scan be painful?
The procedure is generally painless. You will feel mild pressure when the wand is inserted and angled, similar to a routine gynecological exam. If you feel pain, let the Radiographer know immediately.
Conclusion
A Transvaginal Ultrasound is a safe, minimally invasive procedure that provides your doctor with the clearest possible picture of your pelvic health. Its detailed precision makes it a vital tool for diagnosing reproductive concerns and monitoring early pregnancy.