Background
The number and quality of oocytes currently present in the ovaries of a woman at a given time are referred to as her ovarian reserve. The ovarian reserve evaluation is essential in clinical management of infertility because it offers valuable diagnostic and prognostic information. It would cause the clinician to adapt the protocol of ovarian stimulation on individual basis, giving each couple the best chance possible and lowering the number of cancelled ART treatment due to poor ovarian response (POR) or hyper ovarian response. Regarding the number of oocytes retrieved a poor ovarian responder is defined by the oocytes retrieval as less than 4. Hyper responder is defined by the oocytes retrieval more than 15 oocytes after a standard stimulation regimen. There are many ovarian reserve tests( ORTs) such as :age, basal follicle stimulating hormone (FSH), Anti-Müllerian hormone (AMH), Inhibin B, Antral follicle count, basal estradiol (E2), clomiphene citrate challenge test, Exogenous follicle stimulating hormone ovarian reserve test and Gonadotrophin releasing hormone agonist stimulation test. Manny authors found that the Anti –Müllerian hormone (AMH) and the Antral follicle count are the best markers of ovarian reserve status. For several years Transvaginal 2D ultrasound has been used broadly to assess the antral follicle with good resolution and accuracy in the early follicular phase, by determining the mean of two perpendicular measures. Recently several studies show a very good reliability of transvaginal 3D ultrasound versus Transvaginal 2D Ultrasound