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０ 引言体表电位是心脏电兴奋事件在人体表面的粗略投影，而且体表电位容易受到躯干的不均匀性、胸腔组织电导率不均匀性、胸腔模型的不规则性等各个方面的影响，因此很难由体表电位分布图反映心脏电兴奋的具体细节。５年前ＢｉｎＨｅ和Ｒ．Ｊ．Ｃｏｈｅｎ采用同心环电极首次
0 INTRODUCTION Body surface potential is a rough projection of cardiac electrical excitations on the surface of the human body and the potential of the body surface is susceptible to various aspects of the torso, the heterogeneity of the conductivity of the thoracic tissue, and the irregularity of the thoracic cavity model It is difficult to reflect the details of the electrical excitement of the heart by the body surface potential distribution. 5 years ago BinHe and R. J. Cohen uses concentric ring electrodes for the first time