无症状人群冠状动脉CTA影像分析

目的:对无症状人群冠状动脉CTA影像进行分析,观察冠状动脉病变在无症状人群中的发生情况。方法:对60例科技人员进行128层CTA检查,扫描时心率控制在70次/分以下,由两位副主任医师共同评价图像质量,每例患者观察6支主要冠脉分支。结果:60例中共发现29支血管变异,其中1支为冠脉起源异常,28支为心肌桥,心肌桥以左冠脉前降支发生率最高,为33.33%(20/60);共发现52支血管内斑块形成,以左冠前降支发生率最高,占51.90%(27/52),软斑块和混合斑块分别为32(32/52)和13支(13/52);管腔轻、中度狭窄也以左冠前降支最多见,分别占40.00%(24/60)和5.00%(3/60)。结论:冠状动脉CTA在无症状人群(科技人群)检查中意义重大,可以作为有效的冠状动脉病变筛查工具以及选择治疗方案的重要参考。

Analysis of the CT angiographic findings of coronary artery in non-symptomatic population

Objective：To analyze the imaging findings of coronary artery CT angiography （CACTA） in order to ob- serve the coronary artery abnormalities in non-symptomatic population. Methods：CACTA were performed with 128-slice CT in 60 cases of non-symptomatic scientific workers, their heart rates must be controlled less than 70 times per minute. The images were evaluated by 2 senior physicians together,6 main branches of coronary artery were evaluated in each case. Re- sults：Altogether 29 vascular variations were revealed in the 60 cases, with anomalous origin of coronary artery in 1 case, and cardiac muscle bridge in the rest 28 cases. The incidence rate of cardiac muscle bridge occurred in the anterior descending branch of left coronary artery was the highest （33.33% ,20/60 cases） （P~0.01）. Intra-arterial plaques were assessed in 52 branches, also with the incidence rate of anterior descending branch of left coronary artery as the highest （51.90 %, 27/52）. Soft plaque and mixed plaque could be found in 32 （32/52） and 13 （13/52） branches respectively. Mild and moderate narrowing of the arterial lumen were also found most frequently in the anterior descending branch of left coronary artery, accounts for 40. 00% （24/60） and 5.0% （3/60） respectively. Conclusion： CACTA provides significant information in non- symptomatic population （scientific workers）, which could be used as an effective screening approach and useful reference for treatment guidance.