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目的:探讨心肌桥的多排螺旋CT血管造影成像特点及与冠状动脉粥样硬化之间的关系。方法:对92名患者进行CT冠状动脉血管造影及图像后处理(最大密度投影、曲面重组、容积重组),分析其影像改变及特点;并分析左前降支肌桥与冠状动脉粥样硬化发生关系。结果:92例病例共检出心肌桥23例,检出率25%。其中左前降支中段18例,占78.2%;临近心肌桥段冠状动脉与无心肌桥相同部位冠状动脉斑块的发生存在统计学意义(P<0.05)。结论:螺旋CT血管造影是诊断心肌桥的有效且无创的方法之一;心肌桥为冠状动脉粥样硬化发生的重要因素。
Objective: To investigate the characteristics of multi-slice spiral CT angiography in myocardial bridge and its relationship with coronary atherosclerosis. Methods: Ninety-two patients underwent CT coronary angiography and postprocessing (maximal density projection, surface reconstruction, volumetric reconstitution) to analyze the changes and features of CT images. The relationship between left anterior descending artery bridge and coronary atherosclerosis . Results: 23 cases of myocardial bridge were detected in 92 cases, the detection rate was 25%. There were 18 cases in the middle segment of the left anterior descending branch, accounting for 78.2%. The incidence of coronary plaque in the same site adjacent to the myocardial bridge without myocardial bridge was statistically significant (P <0.05). Conclusion: Spiral CT angiography is an effective and noninvasive method for the diagnosis of myocardial bridge. Myocardial bridge is an important factor in coronary atherosclerosis.