[Determination of the ovulation date in women with disturbed cervical factor by means of sonographic measurement of follicular growth, hormonal parameters and basal body temperature].

In 23 women from the fertility clinic with disturbed cervical factor and ovulatory cycles, the BBT was carried out, FSH, LH, progesterone and E2 were assayed and the follicular maturation was determined sonographically. The hormonal assays and ultrasound investigations were performed as a rule at 1-2 day intervals. The follicles were measured three dimensionally. At the time of ovulation, the mean diameter averaged 23 mm. There was a very good correlation between the various methods for determining the date of ovulation. Since the cervical factor could not be used for date determination in the patient group investigated, the immediately available result of the ultrasonographic investigation proved to be especially valuable. It was possible to attain a pregnancy in four cases.