双源CT双能量冠脉成像对冠脉支架术后的临床价值

The clinical evaluation of dual energy of dual source CT in diagnosis of coronary arterial stent

目的探讨双源CT双能量冠脉成像对冠脉支架术后的临床价值。方法对32例冠心病支架术后患者行双能量扫描,对比分析冠脉支架CT血管成像和选择性冠脉造影检查,将14例临床确诊陈旧性心梗患者进行心肌灌注分析。结果 32例患者置入46枚支架均成功显示,1例患者2枚支架因钙化评价受限。14例确诊为陈旧性心梗的患者均显示不同程度的心肌灌注缺损。结论双源CT双能量扫描不但能较好的评价冠脉支架植入术后支架情况,还能对心肌灌注改变做出判断。

Objective To investigate the value of dual energy of dual source CT in diagnosis of coronary arterial stent. Methods 32 patients implanted coronary arterial stent were performed dual source CT dual energy scan. We compared the results of CT coronary angiography and selective conventional angiography, and analysed the myocardial perfusion in 14 patients with old myocardial infarction. Results 32 patients with 46 stents were successfully displayed, 2 of 46 coronary stents can not be evaluated due to insufficient image quality because of calcification. 14 patients were diagnosed as chronic myocardial infarction patients showing different degree of myocardial perfusion defect. Conclusion Dual energy CT scan can not only better assess coronary stent implantation, but make judgments on the myocardial perfusion as wed.