The authors propose an algorithm to detect fetal movements using M-mode ultrasonography. To do this work automatically, the authors find the crosscorrelation between the current data vector of the depth direction of M-mode image and the previous one. In the crosscorrelation estimator, the variation of time lag /spl tau/ at maximum crosscorrelation value means fetal movements. A woman in the 37th week of pregnancy was monitored and the ultrasonic image of the fetus was recorded over 20-minute period to detect fetal movements using B-mode and M-mode ultrasonography simultaneously. The presented method was compared with maternal perception and B-mode ultrasonography observed by a clinician. The maternal perception method detected only 57% of all fetal movements observed by clinician. The detection capability of the presented method corresponds to the clinician's detection result.
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机译：作者提出了一种使用M型超声检查来检测胎儿运动的算法。为了自动完成这项工作，作者找到了M模式图像深度方向的当前数据向量与前一个向量向量之间的互相关。在互相关估计器中，最大互相关值处的时滞/ spl tau /的变化表示胎儿运动。监测怀孕第37周的一名妇女，并在20分钟内记录胎儿的超声图像，以同时使用B型和M型超声检查胎儿的运动。将该方法与产妇的知觉和临床医生观察到的B型超声进行了比较。产妇知觉法仅检测到临床医生观察到的所有胎儿运动的57％。提出的方法的检测能力与临床医生的检测结果相对应。
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