Transvaginal Ultrasound

A transvaginal ultrasound (TVUS) uses a slender probe covered by a sheath and gel, inserted gently into the vagina to obtain high-resolution images of the ovaries, uterus, and endometrium. It provides far greater detail than abdominal ultrasound for reproductive structures.

In fertility care, TVUS is used to count antral follicles (AFC), monitor follicle growth during stimulation, assess endometrial thickness and pattern before embryo transfer, and detect uterine abnormalities such as fibroids, polyps, or a septum.

It is a quick, minimally uncomfortable procedure typically performed by an RE, nurse practitioner, or sonographer at monitoring appointments.