Diagnostic ultrasound may be used to both investigate unexplained infertility and monitor all types of infertility treatment in women. Presented in this paper are the numbers of cycles scanned and the numbers of scans performed over the period from November 1981 to March 1986. In patients with unexplained infertility there was only a 39% rate of normality observed with ultrasound. Ultrasound observation of ovulation in patients on clomiphene or gonadotrophin therapy showed a disappointingly low rate.
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