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五、解剖空间和形象空间已知解剖位置上一对电极,对不同位置上的心电偶,具有不同的导联向量。那么,一个心电偶对不同电极的解剖导联,其导联向量的分布又怎样呢? 还是用体模做实验。假定体模是圆筒形,人工电偶放在体模内,16个电极A—P均匀放在筒壁,相当于电偶的水平上,测量每个电极和电偶中心二点间的电压,确定电压达到最大值时的电偶方位。因为只有当导联向量和电偶向量平行时,投影才会达到最大值,所以,这时人工电偶的方向也就是导联向量的方向。以最大值为向量相对长度,有方向有大小就可以在平面上画出各电极的导联向量。再
Five, anatomical space and image space Known anatomical location of a pair of electrodes, different positions on the ECG, with different lead vector. So, an ECG on the different leads of the anatomical lead, the distribution of the lead vector, what happens? Or use the phantom to do the experiment. Assuming that the phantom is cylindrical and the artificial galvanic couple is placed in the phantom, the 16 electrodes A-P are evenly placed on the wall of the cylinder, corresponding to the level of the galvanic couple, and the voltage between each electrode and the center of the galvanic couple , To determine when the voltage reaches the maximum galvanic position. Because only when the lead vector and the galvanic vector are parallel, the projection will reach the maximum, so the direction of the artificial galvanometer is the direction of the lead vector. To the maximum relative length of the vector, there is a direction of the size of the electrode can be drawn in the plane of the lead vector. again