Thaler I, Manor D, Rottem S, Timor-Tritsch I E, Brandes J M, Itskovitz J
Department of Obstetrics and Gynecology A, Rambam Medical Center, Haifa, Israel.
J Clin Ultrasound. 1990 May;18(4):364-9. doi: 10.1002/jcu.1870180423.
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.
采用高频经阴道图像引导多普勒系统研究了女性盆腔血管的灌注特征。一个5兆赫的多普勒换能器与一个专门为阴道内使用设计的6.5兆赫探头相连。在怀孕前和怀孕期间，从子宫动脉的升支获得了不同的流速波形模式。观察到整个妊娠期舒张期血流逐渐增加，这与血管阻力降低一致。从漏斗骨盆韧带采集卵巢动脉的流速剖面。在月经周期的卵泡期，两侧卵巢均只能检测到有限的舒张期血流。在黄体期，这种血流有显著增加，但仅在有黄体的卵巢中。在妊娠早期，高舒张期血流得以维持甚至增加，这与低动脉阻力一致。高图像分辨率和更高频率的多普勒换能器增加了该技术在女性盆腔血管血流动力学评估中的实用性。
