SHOULD RESULTS OF ULTRASOUND DOPPLER STUDIES BE REPORTED IN UNITS OF FREQUENCY OR VELOCITY
SHOULD RESULTS OF ULTRASOUND DOPPLER STUDIES BE REPORTED IN UNITS OF FREQUENCY OR VELOCITY
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DOI：
10.1016/0301-5629(89)90065-3
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发表时间：
1989-01-01
影响因子：
2.9
通讯作者：
STRANDNESS, DE
中科院分区：
文献类型：
--
作者：
PHILLIPS, DJ;BEACH, KW;STRANDNESS, DE
目前有一种趋势是以速度为单位报告超声多普勒研究结果，而不是以多普勒频率为单位。这可能是由于一种直观的感觉，即血流研究应该自然地以厘米/S为单位进行报告，以及“速度”是多普勒超声研究的正常化因素的概念。为了确定速度，多普勒角。或由超声波束和流速矢量形成的角度，必须已知。使用目前可用的系统不可能获得该角度的准确估计值。本文回顾了与多普勒方程有关的物理知识，并举例说明了以速度为单位报告时可能产生的误差的来源和大小。提供了以速度为单位报告多普勒研究结果的指导方针。本文旨在加深对多普勒方程的理解及其在临床研究中的应用，以提高多普勒超声检查的诊断价值，减少可能导致病人处理错误信息的严重错误。
There is a current tendency to report the results of ultrasound Doppler studies in units of velocity instead of Doppler frequency. This is probably motivated by the intuitive feeling that blood flow studies should naturally be reported in cm/s and the notion that "velocity" is a normalizing factor for Doppler ultrasound studies. In order to determine velocity, the Doppler angle .theta. or angle formed by the ultrasound beam and flow velocity vector, must be known. It is not possible, using currently available systems, to obtain an accurate estiamte of this angle. The physics related to the Doppler equation are reviewed in this paper along with examples to illustrate the origin and magnitude of errors that could arise when reporting in units of velocity. Guidelines are provided for thinking about reporting results of Doppler studies in units of velocity. An understanding of the Doppler equation and its use in clinical studies are promoted in this paper to enhance the diagnostic usefulness of Doppler ultrasound studies and to reduce serious errors which could lead to faulty information dictating patient management.