PDF(1949 KB)
PDF(1949 KB)
PDF(1949 KB)
心冲击图特征统计及其医学诊断应用
Statistical analyses of ballistocardiogram features for cardiac disease diagnosis
心冲击图是一种新的无接触心脏活动检测方法。该文通过自行研制的心冲击图-心电图(BCG-ECG)联合采集设备,采集获取48名健康成年人(男性38名,女性10名)和77位冠心病患者(男性33名,女性44名)的BCG和ECG信号以及部分病人术前术后的信号。提取BCG的幅值、时间间隔以及能量等特征量,通过独立变量t检验,对心冲击图特征差异显著性进行分析。结果表明: 健康成年人与冠心病病人的特征进中tIJ、 tJK、 IntHK和IntBCG有着显著性差异; 在术后心冲击图特征RR、 tHI、 tIJ、 HI、 IJ以及IntBCG有显著性差异; 在室性早搏病人中,室性早搏的发生会导致BCG信号幅度降低。
The ballistocardiogram (BCG) is an innovative noninvasive cardiac activity monitoring method. A Ballistocardiogram-Electrocardiography (BCG-ECG) measurement system was used here to collect BCG and ECG signals of 48 healthy subjects (male: 38; female: 10) with no history of cardiovascular diseases and 77 subjects (male: 33; female: 44) with coronary heart disease (CHD). Preoperative and postoperative BCG signals were also measured for some subjects. The temporal features, including the time intervals, amplitudes and energy were extracted from these subjects with the differences of these features examined using the independent Student's t-test. The results showed that the tIJ, tJK, IntHK and IntBCG features had significant differences between healthy subjects and subjects with CHD. Some features including the RR interval, tHI, tIJ, HI, IJ and IntBCG showed significant differences between preoperative BCG and postoperative BCG signals of a subject with CHD while the amplitudes of BCG decreasing during premature ventricular contraction (PVC).
心冲击图 (BCG) / 冠心病(CHD) / 室性早搏(PVC) / 术后恢复评价
ballistocardiogram (BCG) / coronary heart disease (CHD) / premature ventricular contraction (PVC) / postoperative recovery evaluation
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