320排动态容积CT冠状动脉成像在隐匿性冠状动脉疾病筛查中的应用评价

目的 探讨320排动态容积CT冠状动脉成像在隐匿性冠状动脉疾病筛查中的应用价值.方法 对57例无冠心病症状的体检者行320排动态容积CT全心扫描后,对冠状动脉及其分支进行重建及分级评价,并评价成像质量及估算有效辐射剂量.结果 发现狭窄性病变34例,其中多支狭窄性病变25例,单支狭窄性病变9例;重度狭窄(≥75%)4支,中度狭窄(50%～75%)9支,轻度狭窄(＜50%)55支.图像质量1级51例,2级6例.平均辐射剂量(2.67±0.47)mSv.结论 320排动态容积CT冠状动脉成像检查对隐匿性冠状动脉疾病的检出具有重要意义.

The Application of 320 Slice Dynamic Volume CT in Screening Dormant Coronary Artery Disease

Objective To explore the applied value of 320 slice dynamic volume CT in screening dormant coronary artery disease.Methods 57 healthy people without symptoms of coronary artery disease were scanned for the whole heart by 320 slice dynamic volume CT.The coronary artery segments and their branches were reconstructed,and the imaging quality and dosage of effective radiation were also explored.Results Vascular stenosis were found in 34 cases,multivessel stenosis in 25 cases,single stenosis in 9 cases;4 branches for severe stenosis（≥75%）,9 branches for moderate stenosis（50%-75%）,55 branches for mild stenosis（narrow degree 〈50%）.The image quality of 51 cases arrived at level 1 and 6 cases at level 2.Average radiation dose was（2.67±0.47）mSv.Conclusion It is of great significance to screen dormant coronary artery disease by 320 slice dynamic volume CT.