• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Ultrasound International Open >Evaluation of Peak Reflux Velocities with Vector Flow Imaging and Spectral Doppler Ultrasound in Varicose Veins
【2h】

Evaluation of Peak Reflux Velocities with Vector Flow Imaging and Spectral Doppler Ultrasound in Varicose Veins

机译：矢量流成像和频谱多普勒超声评估静脉曲张中峰值回流速度

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

>Purpose Spectral Doppler ultrasound (SDUS) is used for quantifying reflux in lower extremity varicose veins. The technique is angle-dependent opposed to the new angle-independent Vector Flow Imaging (VFI) method. The aim of this study was to compare peak reflux velocities obtained with VFI and SDUS in patients with chronic venous disease, i. e., pathological retrograde blood flow caused by incompetent venous valves. >Materials and Methods 64 patients with chronic venous disease were scanned with VFI and SDUS in the great or the small saphenous vein, and reflux velocities were compared to three assessment tools for chronic venous disease. A flow rig was used to assess the accuracy and precision of the two methods. >Results The mean peak reflux velocities differed significantly (VFI: 47.4 cm/s vs. SDUS: 62.0 cm/s, p<0.001). No difference in absolute precision (p=0.18) nor relative precision (p=0.79) was found. No correlation to disease severity, according to assessment tools, was found for peak reflux velocities obtained with either method. In vitro, VFI was more accurate but equally precise when compared to SDUS. >Conclusion Both VFI and SDUS detected the pathologic retrograde flow in varicose veins but measured different reflux velocities with equal precision. VFI may play a role in evaluating venous disease in the future.
机译：>目的：频谱多普勒超声（SDUS）用于量化下肢静脉曲张中的反流。与新的与角度无关的矢量流成像（VFI）方法相反，该技术与角度有关。这项研究的目的是比较VFI和SDUS在患有慢性静脉疾病的患者中的最高回流速度。如静脉瓣膜功能不全引起的病理性逆行血流。 >材料与方法对64例慢性静脉疾病患者的大隐静脉或小隐静脉进行了VFI和SDUS扫描，并将回流速度与三种慢性静脉疾病评估工具进行了比较。使用流动钻机评估这两种方法的准确性和精确性。 >结果：平均峰值回流速度差异显着（VFI：47.4 cm / s； SDUS：62.0 cm / s，p <0.001）。绝对精度（p = 0.18）和相对精度（p = 0.79）均未发现差异。根据评估工具，发现两种方法获得的峰值反流速度均与疾病严重程度无相关性。在体外，与SDUS相比，VFI更为准确，但同样精确。 >结论 VFI和SDUS均可检测出静脉曲张中的病理性逆行血流，但以相同的精度测量了不同的回流速度。 VFI可能在将来评估静脉疾病中发挥作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号