心肌桥解剖及CT血流储备分数的性别差异研究  

Study on Gender Differences in Myocardial Bridge Anatomy and Fractional flow reserve on CT

作　　者：李梦雅[1] 黄亚飞[1] 张丹 张昊文 李彩英[1] LI Mengya;HUANG Yafei;ZHANG Dan(Department of Radiology,the Second Hospital of Hebei Medical University,Shijiazhuang,Hebei Province 050000,P.R.China)

机构地区：[1]河北医科大学第二医院医学影像科,石家庄市050000 [2]河北医科大学第三医院医学影像科,石家庄市050051

出　　处：《临床放射学杂志》2025年第5期861-865,共5页Journal of Clinical Radiology

基　　金：2025年度河北省医学科学研究课题计划项目(编号:20250549)。

摘　　要：目的分析不同性别的左冠状动脉前降支心肌桥患者间的心肌桥解剖结构及其对CT血流储备分数(FFRCT)值的影响,并探讨其临床价值。方法回顾性搜集在本院行冠状动脉CTA检查示左冠状动脉前降支心肌桥的患者139例,按性别分为男性组76例和女性组63例。分析不同性别心肌桥解剖结构的差异,分别分析男性组和女性组造成FFRCT值异常的影响因素。结果男性组比女性组心肌桥深度更深、肌肉收缩指数更大(P<0.05)、纵深型心肌桥占比更高(51.3%);女性组心肌桥远端FFR3值在收缩期和舒张期均低于男性组(P<0.05),女性组△FFR值均高于男性组(P<0.05);无论男性组还是女性组,心肌桥FFRCT值异常组心肌桥长度均较FFRCT值正常组更长(P<0.05);回归分析显示心肌桥的长度是影响男性组和女性组FFRCT值异常的独立危险因素(P<0.05)。结论男性与女性心肌桥解剖存在差异,心肌桥对女性心肌桥远端FFRCT值影响更大,男性组和女性组FFRCT值异常的危险因素均为心肌桥长度。Objective This study aimed to analyze the anatomical structures of myocardial bridges in patients with left anterior descending coronary artery myocardial bridges,focusing on gender differences and their impact on FFRCT values,along with exploring their clinical significance.Methods A retrospective analysis was conducted on 139 patients with myocardial bridges in the left anterior descending coronary artery who underwent coronary CTA.Patients were divided into a male group(76 cases)and a female group(63 cases).The study focused on the anatomical differences between genders and the factors influencing abnormal FFRCT values.Results Males showed greater myocardial bridge depth and higher contraction index than females(P<0.05),with a greater prevalence of deep-type bridges(51.3%).The distal FFR3 value of the myocardial bridge in the female group was lower than that in the male group during both systole and diastole(P<0.05),while the△FFR value was higher than that in the male group(P<0.05).In both genders,myocardial bridges in the abnormal FFRCT value group were longer than those in the normal FFRCT value group(P<0.05).Regression analysis indicated that the length of the myocardial bridge is an independent risk factor for abnormal FFRCT values in both males and females(P<0.05).Conclusion The study revealed anatomical differences in myocardial bridges between genders,with females exhibiting a greater impact on distal FFRCT values.The length of the myocardial bridge is a shared risk factor for abnormal FFRCT values in both genders.

关 键 词：心肌桥 性别 冠状动脉CTA CT血流储备分数 

分 类 号：R541.4[医药卫生—心血管疾病]