[Vaginal echography in ovulation monitoring excluding in vitro fertilization]

Vaginal ultrasonography makes it possible to observe follicles which remain hidden from abdominal ultrasonography, but provides a less accurate measurement of the diameter of large follicles. The vaginal route improves the observations of the endometrium, eliminates certain artifacts in the exploration of ovarian cysts and considerably enhances the accuracy of diagnosis of ectopic pregnancies. The limits of the method must, however, be recognized, and it demands very wide experience on the part of the ultrasonographer.