The authors carried out studies retrospectively on 57 women, who became pregnant in insemination with donor frozen spermatozoa. Ovulation problems and luteal insufficiency were diagnosed in advance and treated before and during the occurring cycles. Women were divided into two groups. The first group of 25 women were examined by ultrasound transvaginal transducer for follow-up of follicle growth in the ovaries in addition to measurement of body temperature and determination of the cervical factor. The second group of 32 women, in whom follicle-metry was not performed. The frequency of conception was 0.24 in the first group, but 0.26 in the second group. It is concluded that inspite of the significance of follicle-metry for determination of ovulation the traditional methods are still valid criteria for ovulation and can be used as independent methods for determination of the time for insemination with therapeutic donor frozen spermatozoa.
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