摘要
现有胎心仪在第二产程母体干扰较高的情况下容易发生误检。针对这一不足,该文设计并实现了母婴联合胎心监护系统。系统获取腹部胎心超声多普勒信号和母体指部血氧信号,根据母体指部血氧信号和腹部胎心多普勒信号的互相关最大值估计胎心多普勒信号中的母体干扰程度,并据此切换适用于较低干扰的自相关法或适用于较高干扰的改进模板匹配算法。实验结果表明联合方法的正确率比改进的模板匹配法高出9.2%,比自相关方法高出6.1%。
The existing fetal monitor is prone to false detection in the case of high maternal interference in the second stage of labor.With this background,the article designs and implements a combined maternal-fetal fetal heart monitoring system.The system obtains the Doppler signal of the abdominal fetal heart and the blood oxygen signal of the mother's finger,and estimates the maternal interference degree in the fetal heart rate Doppler signal according to the maximum correlation value between the maternal finger blood oxygen signal and the abdominal fetal heart Doppler signal,and switches the fetal heart rate extraction algorithm between the autocorrelation method suitable for lower interference and improved template method suitable for higher interference according to the maternal interference degree.The accuracy of our method is 9.2%which is higher than that of the improved template matching method and 6.1%higher than that of the autocorrelation method.
作者
徐添翼
蔡萍
刘小华
马艺馨
XU Tianyi;CAI Ping;LIU Xiaohua;MA Yixin(Department of Instrument,Shanghai Jiao Tong University,Shanghai,200240;Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment Instrument,Shanghai,200240;The International Peace Maternity & Child Health Hospital of China Welfare Institute,Shanghai,200030)
出处
《中国医疗器械杂志》
2019年第3期162-164,182,共4页
Chinese Journal of Medical Instrumentation
基金
上海交通大学医工交叉项目(YG2016MS41)
上海市卫生和计划生育委员会面上项目(201740043)
关键词
胎心率
母体干扰
多普勒
fetal heart rate
maternal interference
Doppler
