一种基于R波和T波的心电图ST段夹逼检测方法  

A Squeeze Approach for Electrocardiogram ST-segment Detection Based on R-wave and T-wave

作　　者：宋晋忠[1] 严洪[1] 李力[2] 杨向林[1] 

机构地区：[1]中国航天员科研训练中心航天医学基础与应用国家重点实验室,北京100094 [2]中国空间技术研究院发展计划部,北京100094

出　　处：《生物医学工程学杂志》2011年第5期855-859,共5页Journal of Biomedical Engineering

基　　金：中国航天医学工程预先研究项目资助(SJ200903)

摘　　要：ST段变化是心电图(ECG)检测心肌缺血(MI)主要的临床表现,受基线漂移、体位变化、电极等因素影响,给ST段的有效检测带来困难。目前ST段常用的检测方法有:R+x和J+x,但它们受T波形态变异影响很大,且J点定位也存在一定的难度。基于上述原因,本文提出了一种方便准确的T波起点检测方法,该方法不需定位T波峰点,且受基线漂移、T波变异等的影响很小。然后联合R波峰点和T波起点提出了一种ST段夹逼检测方法,经公共数据库Long-Term ST database(LTST)验证,该方法有很好的实时性和鲁棒性,且准确率能够达到92%以上。ST-segment is the main clinical appearance in myocardial ischemia detection based on electrocardiogram （ECG） signals. However, it is highly sensitive to interferences （baseline wandering, postural changes, electrode in- terference, etc. ）, which cause the feature points of ECG ST-segment to be difficult to detect accurately. Currently, the common detection methods of ST-segment are： RA-x and J-kx, but they are affected badly by T-wave morpho- logical variability and J point location. For these reasons, firstly we proposed a convenient and accurate approach for T-wave onset in this paper. It did not need to locate T-wave peak and was robust to baseline wandering and T-wave morphology. Secondly, we proposed a squeeze approach for ST-segment detection based on R-wave peak and T-wave onset. After the Long-Term ST database （LTST） verification, the proposed method has shown a good timeliness and robustness, and the accuracy of ST-segment detection has reached above 92%.

关 键 词：心电图 心肌缺血 ST段 T波起点 

分 类 号：R318.0[医药卫生—生物医学工程]