摘要
目的:探讨心肌桥-壁冠状动脉(myocardiac bridge and mural coronary artery,MB-MCA)检出率及MB-MCA与动脉动脉粥样硬化的关系。方法:回顾性分析455例冠状动脉的MSCT资料。在薄层横断面图像基础上,主要通过分析CPR、VR图像判断MB-MCA。评估右冠状动脉、左前降支和左旋支3支的近、中、远段,以及MCA本身及其近、远侧段血管有无动脉粥样硬化钙化斑块、钙化积分评分、软斑块及其狭窄情况。结果:检出MB-MCA者的各支冠脉动脉粥样硬化钙化斑块和软斑块主要累及近段,较未检出MB-MCA者中段、远段增多且差异具有统计学意义(P均<0.05)。MB近侧动脉粥样硬化斑块检出率显著多于MCA本身和其远侧(P<0.001)。结论:MB-MCA并不会促进动脉粥样硬化的发生和进展,反而在某种程度上降低其发生的风险。
Objective： Exploring the myocardial bridge and the correlation between myocardial bridge and coronary artery athero- sclerosis. Method：The data of 455 patients scanned by 128 slice CT were retrospectively evaluated. The myocardial bridge and mural coronary artery （MB-MCA） were determined by observing and analyzing the images of transect, curved planar reforma- tion and volume rendering. The atherosclerotic catcific plaque and calcific score,soft plaques and strait degree of the right coro- nary artery （RCA）, the left anterior descending coronary artery （LAD） and the left circumflex artery （LCX） were respectively evaluated in proximal, middle and distal segments per vessel. Results： Of the 455 patients, MB-MCAs were found in 292 （64.18~） patients. There was significant difference （P（0.05） between the patients found MB-MCAs and that no MB-MCA a- bout the rate of atherosclerotic calcific and soft plaques,calcifie score, and strait degree in each vessel. The atherosclerotic calcific and soft plaques involved more proximal segments to MCA than that self of MCA and distal segments （P（0. 001）. Conclu- sions ： MB-MCA would not increase the generation and evolution of arterial atheroselerosis, whereas MCA may reduce the risk of atherosclerosis.
出处
《中国中西医结合影像学杂志》
2014年第1期31-33,F0003,共4页
Chinese Imaging Journal of Integrated Traditional and Western Medicine
