冠脉造影后心肌血流灌注成像的价值探讨

THE VALUE STUDY OF MYOCARDIAL BLOOD PERFUSION IMAGING(MBPI)AFTER DIGITAL SUBTRACTION CORONARY ARTERIOGRAPHY

目的:为探讨冠脉造影后心肌血流灌注成像(MBPI)的价值与限度。选择30例冠脉及左心室造影者行 MBPI,即将冠脉造影后心室舒张末(ED)毛细血管充盈相及与之完全配准的不含造影剂的ED 相相减,调节窗宽窗位,使染色心肌显像。分析冠脉狭窄程度与心肌灌注减少的关系。结果:心肌灌注正常16例,灌注稀疏10例,灌注缺损2例,稀疏+缺损2例。心肌灌注减少与冠脉狭窄程度呈明显正相关(Spearman 检验.r=0.8490,P<0.001)。结论:MBPI 效果非常直观,结合冠脉造影表现,可更全面地评价心肌缺血的程度和范围,并能及时反映治疗效果。

To explore the value of myocardial blood perfusion imaging,30 cases of digital sub- traction coronary arterigraphy and left ventriculography were chosen to make MBPI,which was fin- ished by the subtraction of two myocardial capillary phases.One was full of contrast in the end of di- astole and one was not,and then the window width and window level were adjusted.The relation be- tween coronary stenosis and myocardial perfusion was analysed.The results showed that 16 cases reg- istered normal myocardial blood perfusion’10 cases lack of perfusion,2 cases no perfusion,another 2 caese lack of and no perfusion.Notably,myocardial perfusion positively correlated to coronary stenosis (spearman test,r=0.8490,P<0.001).It was concluded that the effect of MBPI was very direct, and,combined with coronary arteriogram,the area and degree of ischemic myocardium could be evalu- ated more completely,and its therapeutic effect could be known in time.