弦线式体模模拟血流速度测量方法探讨  

Discussion on the Measurement Method of String-line Phantom to Simulate Blood Flow Velocity

作　　者：陈春芳[1] 唐翡 谢荣鑫 CHEN Chunfang;TANG Fei;XIE Rongxin

机构地区：[1]深圳市计量质量检测研究院,广东深圳518055

出　　处：《计量与测试技术》2020年第12期36-38,共3页Metrology & Measurement Technique

摘　　要：超声多普勒诊断仪可以实时显示运动中的脏器和血液的血流方向及相对速度,提供心血管系统在时间和空间上的信息。利用多普勒弦线体模可以测试经颅多普勒诊断仪对血流速度的探测能力,但是目前计量工作中缺少对多普勒弦线体模输出的模拟血流速度实际值的测量方法,无法保障多普勒弦线体模输出的模拟血流速度可靠性。本文结合高精度转速计设计了一个方法,可以实现对多普勒弦线体模在恒定速度模式下输出的模拟血流速度的精准测量,保障弦线体模对经颅多普勒血流速度测量能力的可靠性。The ultrasonic Doppler diagnostic instrument can display the blood flow direction and relative speed of blood in real time,and provide information about the cardiovascular system in time and space. The Doppler string phantom can be used to test the blood flow velocity detection ability of the transcranial Doppler diagnostic instrument. But the current measurement studies lack a method to measure the actual value of the simulated blood flow velocity output by the Doppler string phantom. Thus,the reliability of the simulated blood flow velocity output by the Doppler string phantom cannot be guaranteed. In this paper,a method which employed a high-precision tachometer is designed to realize the accurate measurement of the simulated blood flow velocity output by the Doppler string phantom in the constant velocity mode. This method can guarantee the reliability of measurement capabilities of the string phantom to the transcranial Doppler blood flow velocity.

关 键 词：多普勒诊断仪 弦线体模 血流速度 

分 类 号：TB937[一般工业技术—计量学]