64层螺旋CT在心肌桥诊断中的应用

目的应用64层螺旋CT提高对心肌桥的诊断效能，指导临床工作。方法对2009年10月至2010年2月期间284例检查图像质量好的受检者进行回顾性分析，图像经多种重建方式（包括VR、MIP、CRP等）后处理，观察MB—MCA的出现频率、部位、MB的厚度及长度、MCA受压的狭窄程度。结果共有79例发现心肌桥，占27．8％；共发现心肌桥83段，单桥75例，发现双桥4例。MB的厚度为（1．8±0．8）mm，MB的长度为（2．6±1．3）mm，39段壁冠状动脉管腔有不同程度的狭窄，16例可见冠脉近端不同程度的血管粥样硬化。结论64层螺旋CT冠脉造影是诊断心肌桥高效、安全、清晰的诊断方式。

Application of 64-slice CT in Diagnosticating Myocardial Bridge

Objective To elevate the efficacy of myocardial bridge diagnosis with 64-slice CT for guiding clinical work. Methods From October 2009 to February 2010, 284 cases of 64-slice CT coronary angiograph were analyzed retrospectively, those images were re- constructed with several modes （including VR, MIP, CRP, etc.）, the MB-MCA frequency of occurrence, the location, the thickness and length of MB, the narrow level of MCA were observed. Results A total of 79 cases of myocardial bridge was found （27.8%）, 75 single MB and 4 double MB of total 83 MB. The thickness of myocardial bridges was （1.8 ± 0.8） ram, and length was （2.6 ± 1.3） mm. 39 mural coronary artery lumen appeared stenosis with different degrees, and 16 cases of coronary artery atherosclerosis of blood vessels were found. Conclusion 64-slice CT coronary angiograph was the effective, safe, limpid diagnosis method of myocardial bridge.