Ultrasound has been used for the assessment of uterine morphology for more than two decades. However, trans-abdominal and transvaginal scans have been used with varying success. When used as a screening tool, transvaginal sonography has provided variable sensitivity rates. The distinction between different types of anomalies is often impossible. Three dimensional ultrasound has recently been introduced into clinical practice. This technique overcomes anatomical limitation which restricts the number and orientation of the scanning planes of transvaginal sonography. In addition, three dimensional reconstructive resemblance of the uterine cavity is possible. Thus obtained anatomical images seem to be easily understood and can be analyzed with particular expertise in ultrasound diagnosis. Also, 3D-anatomical reconstruction of organs of interest is possible.