Hemodynamic evaluation of the female pelvic vessels using a high-frequency transvaginal image-directed Doppler system
✍ Scribed by Israel Thaler; Dorit Manor; Shraga Rottem; Ilan E. Timor-Tritsch; Joseph M. Brandes; Joseph Itskovitz
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 640 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0091-2751
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✦ Synopsis
Abstract
Perfusion characteristics of the female pelvic vessels were studied by a high‐frequency transvaginal image‐directed Doppler system. A 5‐MHz Doppler transducer was coupled to a 6.5‐MHz probe especially designed for intravaginal use. Distinct patterns of flow velocity waveforms were obtained from the ascending branch of the uterine artery, before and during pregnancy. A gradual increase in diastolic flow throughout gestation was observed, consistent with a decrease in vessel resistance. Flow velocity profiles in the ovarian artery were sampled from the infundibulo‐pelvic ligament. Only limited diastolic flow could be detected in either ovary during the follicular phase of the cycle. In the luteal phase there was a marked increase in this flow but only in the ovary containing the corpus luteum. In early pregnancy the high diastolic flow was maintained or even increased, consistent with a low arterial resistance. High image resolution and a higher frequency Doppler transducer increase the usefulness of this technique in the hemodynamic evaluation of the female pelvic vessels.