Transvaginal ( TVS) Ultrasound sonography that examines the vaginal organ within the pelvic area is known as Transvaginal USG.It helps to examine and study the fallopian tubes, ovaries, and uterus, properly.In general, it is done in females when females notice abnormalities physically like tumors, cysts, fibroids, etc.It is conducted for a pregnant lady in the first trimester only.It takes about 45–60 minutes to perform the same.