Transvaginal sonography of the endometrium during induced cycles.

The thickness and texture of the endometrium as depicted by transvaginal sonography were assessed in 23 patients who underwent a similar ovulation induction protocol including a gonadotropin-releasing hormone analogue (Lupron) and human menopausal gonadotropin (Pergonal). In the 9 patients who conceived, a multilayered endometrium was more frequently present than in the 14 who did not, even though the number of mature follicles, oocytes retrieved and transferred, and estradiol values were similar.