材料和方法：计算98例冠脉造影者的CTFC和视频密度阶差。
Materials and Methods: Video density scale and CTFC were calculated and compared on 98 cases off coronary catheter angiography.
目的探讨视频密度阶差（VDS）评价冠脉造影时心肌微灌注的可行性及应用价值。
Objective To evaluate the feasibility and the value of video density scale (VDS) for assessing myocardial microperfusion.
结果：正常心肌及心肌造影的彩色象素视频密度值（PVI）在心室壁的不同节段具有不均匀性且差异显著（P<0 .0 0 0 1）。
Results:The PVI of normal cardiac muscle and myocardial contrast of each regional left ventricular walls was anisotropic, and significant different ( P< 0 001).
结果：正常心肌及心肌造影的彩色象素视频密度值（PVI）在心室壁的不同节段具有不均匀性且差异显著（P<0 .0 0 0 1）。
Results:The PVI of normal cardiac muscle and myocardial contrast of each regional left ventricular walls was anisotropic, and significant different ( P< 0 001).
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