...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Clinical Ultrasound: JCU >Observer experience improves reproducibility of color Doppler sonography of orbital blood vessels.
【24h】

Observer experience improves reproducibility of color Doppler sonography of orbital blood vessels.

机译：观察者的经验可改善眶血管彩色多普勒超声检查的可重复性。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

PURPOSE: The study investigated the reproducibility of orbital blood flow measurements with color Doppler imaging (CDI) at different stages of observer experience. METHODS: The subjects were 31 healthy volunteers and 2 sequential groups of 25 glaucoma patients each. Repeated blood flow measurements (usually 3 sets) in orbital vessels (ophthalmic artery, short posterior ciliary arteries, central retinal artery, and central retinal vein) were performed by the same observer in a single session in each subject. RESULTS: The parameters with the best reproducibility were the resistance index (mean coefficient of variation [COV], 3.3-8.8%), the peak systolic velocity (mean COV, 6.9-13.7%), the time-averaged velocity (mean COV, 7.2-16.0%), and the systolic acceleration time (mean COV, 8.8-12.3%). The mean COV was greater (9.9-20.3%) for the other arterial flow parameters (end-diastolic velocity and systolic acceleration) and for the venous flow velocities (maximum and minimum). The COVs of the parameters were improved by 20-40% as the observer became more experienced in ophthalmic CDI. CONCLUSIONS: We confirm the general reliability of CDI measurements in orbital vessels and show that observer experience improves reproducibility. It appears, however, that observer performance in these measurements is vessel specific.
机译：目的：该研究调查了在观察者体验的不同阶段使用彩色多普勒成像（CDI）进行眼眶血流测量的可重复性。方法：受试者为31名健康志愿者，分为2组，每组25例青光眼患者。在每个受试者中，由同一位观察者在一次会议中对眶血管（眼动脉，睫状后短动脉，视网膜中央动脉和视网膜中央静脉）进行重复的血流测量（通常为3组）。结果：具有最高重现性的参数是阻力指数（平均变异系数[COV]，3.3-8.8％），峰值收缩速度（平均COV，6.9-13.7％），时间平均速度（平均COV， 7.2-16.0％）和收缩加速时间（平均COV，8.8-12.3％）。对于其他动脉血流参数（舒张末期速度和收缩期加速）和静脉血流速度（最大和最小），平均COV较大（9.9-20.3％）。随着观察者对眼科CDI的使用经验越来越丰富，参数的COV提高了20-40％。结论：我们确认了在眼眶血管中进行CDI测量的一般可靠性，并表明观察者的经验提高了可重复性。然而，看来观察者在这些测量中的表现是特定于血管的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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