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本文介绍了一种在经颅多普勒脑血流检测系统中自动搜寻颅内血管位置的方法及实现，用解调后回波信号的能量来指示每个深度点的血流状态，通过动态移动采样容积的位置，得到沿声束指向各个检测深度处的血流状态分布并显示出来。医生据此来判断血管的位置，从而克服了传统ＴＣＤ中查找血管困难的问题。
In this paper, we introduce a method to automatically search for intracranial blood vessels in transcranial Doppler cerebral blood flow detection system, and use the energy of the demodulated echo signal to indicate the blood flow state at each depth. Through dynamic Moving the position of the sampling volume, the distribution of the blood flow state at each detection depth along the beam is obtained and displayed. According to the doctor to determine the location of blood vessels, thus overcoming the traditional TCD to find the problem of blood vessels difficult.