This book presents authoritative analyses and syntheses of the available clinical and research findings on using ultrasound to investigate the endometrium and endometrial disorders. It contains fifteen chapters, with colour plates, focusing mainly on transvaginal sonography, including colour Doppler sonography, but also covering sonohysterography, transabdominal sonography, transrectal sonography, and three-dimensional ultrasound of the endometrium and uterine cavity.