Ultrasonography is a diagnostic test used to evaluate the uterus and measure the size and number of ovarian follicles, small “cysts”, which contain the eggs. It allows accurate detection of ovulation disorders and exact timing of the ovulation process. Some of these ultrasounds are done by an ultrasound technician with extensive experience and then reviewed by the doctors. The lining of the uterus can be evaluated for polyps and/or fibroids by injecting saline through the cervix under ultrasound guidance. This is called sono-hysterography.