van Oosterom A, Huiskamp G J
Medical Physics and Biophysics Laboratory, University of Nijmegen, The Netherlands.
J Electrocardiol. 1989 Jan;22(1):53-72. doi: 10.1016/0022-0736(89)90023-x.
The effect of torso inhomogeneities on the electrocardiographic body surface potentials in general, and the waveform of the QRS complex in the standard leads in particular, were studied by using an inhomogeneous, numerical model of the torso including the (lower) conductivity of the lungs and the (higher) conductivity of the ventricular cavities. The relevant geometry was derived from actual data as measured from NMR scans of the subjects studied. The simulated potentials were compared to the body surface potentials recorded in the same individuals. In view of the observed high quality of the correspondence in the fully inhomogeneous case, the quantitative results of the study of the effects of the involved inhomogeneities attain a high level of credibility. To facilitate this analysis a new tool is introduced: the contribution maps.
通过使用包含肺部（较低）电导率和心室腔（较高）电导率的非均匀人体躯干数值模型，研究了躯干不均匀性对总体心电图体表电位，特别是对标准导联中QRS复合波波形的影响。相关几何形状源自对所研究对象进行核磁共振扫描测量得到的实际数据。将模拟电位与同一受试者记录的体表电位进行比较。鉴于在完全非均匀情况下观察到的高度对应质量，关于所涉及不均匀性影响研究的定量结果具有很高的可信度。为便于此分析，引入了一种新工具：贡献图。
