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目的:探讨心肌桥-壁冠状动脉(myocardial bridge and mural coronarv artery,MB-MCA)邻近血管折曲成角改变与壁冠状动脉长度、深度的关系,以及MB-MCA形态学与临床的相关性.方法:回顾性分析93例行64层螺旋CT冠状动脉CTA检查发现MB-MCA的患者(部分病例同时行冠状动脉血管造影检查),测量壁冠状动脉的长度、深度,分析其与邻近血管折曲成角改变的关系及与临床的相关性.结果:MB-MCA邻近段常有折曲成角改变62.2%(61/98),其与壁冠状动脉的深度无相关性,与壁冠状动脉的长度呈负相关(P<0.01);单纯性心肌桥症状的有无与壁冠状动脉的深度、长度、邻近段折曲改变均无相关性.结论:MB-MCA邻近段的折曲成角改变对长度较短的壁冠状动脉的存在有提示作用,此特点有利于64层螺旋CT提高对MB-MCA的诊断准确性.“,”Purpose: To study the relevancy between tortuousness of vessels proximal or distal to my-ocardial bridge and mural coronary artery (MB - MCA) and the length, depth of MCA. And to evaluate the clinical relevancy of morphology of MB - MCA. Methods: Ninety - three patients with MB - MCA were e-valated retrospectively by 64- slice CT(part of cases underwent coronary angiography). The length and depth of MB - MCA were measured and its relationship with tortuousness of proximal or distal vessels and clinical relevancy was studied. Results: The proximal or distal vessels to MB - MCA showed tortuousness in 62.2% cases (61/98). It was not relevant with the depth of MCA and negative relevant with the length of MCA (P < 0.01). The clinical symptoms were not relevant with either the length and depth of MCA or tortuousness of proximal or distal vessels in patients with isolated MB. Conclusion: The tortuousness of proximal or distal vessels may indicate the presence of short MCA. Hence, the recognition of it may im-prove the diagnostic accuracy of MB - MCA by 64 - slice CT.