Comparison between transabdominal and transvaginal ultrasound in the evaluation of a multiple follicular growth

The aim of this work is to compare transabdominal and transvaginal ultrasound measurement of ovarian size and follicular number and diameter during cycles of ovulation induction for assisted reproduction technologies. We included in our study fourty patients undergoing a controlled ovarian stimulation: the ultrasound monitoring of multiple follicular growth was performed by the same operator, with both transabdominal and transvaginal route, during the follicular phase of the cycle, until the day of human chorionic gonadotrophin (hCG) administration; in ten women was compared transabdominal and transvaginal evaluation of total number of recruited follicles > 5 mm in size on day -4, on day -2 and on the hCG administration day (day 0); moreover in all the patients transabdominal and transvaginal measurement of the mean follicular diameter of leading follicle and the mean ovarian diameters on hCG injection day was compared.