transvaginal ultrasound is a test that uses reflected sound waves to produce a picture of the reproductive organs and other structures inside the pelvis. it does not use x-rays or other types of radiation.
for a transvaginal ultrasound, an ultrasound wand (transducer) is placed in the vagina. the transducer emits high-pitched sound waves (above the range of human hearing) that bounce off the uterus and ovaries and are picked up again by the transducer. a computer analyzes the sound waves and converts them into a picture that is displayed on a video monitor. the picture produced by ultrasound is called a sonogram, echogram, or scan.