RELATIONSHIP BETWEEN SEISMOCARDIOGRAM AND ECHOCARDIOGRAM FOR EVENTS IN THE CARDIAC CYCLE
RELATIONSHIP BETWEEN SEISMOCARDIOGRAM AND ECHOCARDIOGRAM FOR EVENTS IN THE CARDIAC CYCLE
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DOI：
10.1159/000470156
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发表时间：
1994-01-01
期刊：
影响因子：
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通讯作者：
SALERNO, DM
中科院分区：
文献类型：
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作者：
CROW, RS;HANNAN, P;SALERNO, DM
地震心动描记术（SCG）是一种使用加速度计记录胸壁超低频心脏振动的无创方法。本研究评价了SCG与超声心动图（Echo）的关系; 39例受试者同时进行SCG和Echo，28例正常人和11例扩张型心肌病。10个SCG点与相应的收缩期和舒张期回声点进行比较。5个收缩点的SCG与Echo之间的平均绝对差为7.6 ms，5个舒张点的SCG与Echo之间的平均绝对差为6.8 ms。心肌病患者的两个SCG收缩点与回波点的差异增加。这两种方法显示出大致相同的能力，区分较长的心脏时间间隔之间的异常与正常。SCG的受试者内变异性低于Echo。SCG和Echo点之间的一致性表明它们在测量心脏时间间隔方面同样准确。
Seismocardiography (SCG) is a noninvasive method to record ultralow-frequency cardiac vibrations from the chest wall using an accelerometer. This research evaluated the relationship between SCG and echocardiography (Echo); 39 subjects had simultaneous SCG and Echo, 28 were normals and 11 had dilated cardiomyopathy. Ten SCG points were compared with their corresponding systolic and diastolic Echo points. The mean absolute difference between SCG and Echo for 5 systolic points was 7.6 ms and 6.8 ms for the 5 diastolic points. Two SCG systolic points showed increased divergence from the Echo points in subjects with cardiomyopathy. Both methods showed approximately equal ability to distinguish longer cardiac time intervals among abnormals compared with normals. Intrasubject variability was lower in the SCG than Echo. The consistency between SCG and Echo points indicates that they are equally accurate in measuring cardiac time intervals.