病窦综合征也可能由窦房结附近的瘢痕组织引起，后者会减慢、干扰、或是阻断电冲动的传导。
Sick sinus can also be caused by scarring near the sinus node that's slowing, disrupting or blocking the travel of impulses.
恶性组织有较高的透电率和传导率，因此在屏幕与正常组织比表现不同。
Malignant tissues have higher permittivity and conductivity and therefore appear differently than normal ones to a screen.
目的初步评价心腔内组织多普勒成像(TDI)对心肌激动及传导的显像功能。
Objective To evaluate the value of intracardiac tissue Doppler imaging (TDI) for showing the myocardial excitation and conduction.
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