Pasto M E, Kurtz A B, Jarrell B E, Dubbins P A, Rifkin M D, Cole-Beuglet C, Baltarowich O, Goldberg B B
Radiology. 1983 Jul;148(1):223-6. doi: 10.1148/radiology.148.1.6856840.
The Kimray-Greenfield filter is a wire cage which is inserted into the inferior vena cava (IVC) to prevent thrombi originating in pelvic and leg veins from embolizing to the lungs. Duplex real-time/pulsed Doppler ultrasound was used to evaluate placement and function in 38 patients (46 examinations). Real-time examination successfully identified the IVC and filter in 89% of cases. Pulsed Doppler studies demonstrated flow above and below the filter in 76%, accurately predicting normal flow in most cases. In 4 patients, Doppler scans revealed little or no flow distal to the filter; contrast cavograms confirmed obstruction secondary to thrombosis. This appears to be an accurate, noninvasive method of assessing postoperative reliability of the Kimray-Greenfield filter.
金雷-格林菲尔德过滤器是一种金属丝笼，通过插入下腔静脉（IVC）来防止盆腔和腿部静脉形成的血栓栓塞至肺部。使用双功实时/脉冲多普勒超声对38例患者（46次检查）的过滤器放置情况及功能进行评估。实时检查在89%的病例中成功识别出下腔静脉和过滤器。脉冲多普勒研究显示76%的病例过滤器上下均有血流，在大多数情况下可准确预测血流正常。4例患者中，多普勒扫描显示过滤器远端血流极少或无血流；造影腔静脉造影证实为血栓形成继发的阻塞。这似乎是一种评估金雷-格林菲尔德过滤器术后可靠性的准确、非侵入性方法。
