320排CT在冠状动脉成像影像学诊断中的应用

目的：探讨320排CT冠状动脉成像影像学诊断冠状动脉狭窄的可行性和临床意义。方法：收集1516例受检者的320排CT冠状动脉成像（CTA）的临床资料，对其中182例受检者后期行冠状动脉造影诊断进行对比。结果：615人冠状动脉正常，轻度狭窄（＜50%）411人，中度狭窄（50%～75%）195人，重度狭窄（＞75%）170人；支架植入术后125人。182例患者的CTA与冠状动脉造影对比，有164例造影图像与CTA图像对比基本一致；18例CTA狭窄程度的评价与冠脉造影不符。结论：320排CT冠状动脉成像是冠心病患者无创检查诊断的重要手段，可为冠心病患者的分级和治疗提供依据，且是高危人群体检筛查冠心病的首选方法。

The initial clinical investigation of the 320-slice spiral CT angiography

Objective：To investigate the diagnostic value of the 320-slice spiral CT angiography for coronary stenosis.Methods： 1516 cases were underwent 320-slice coronary CT angiography（CTA）, 182 cases were underwent both coronary CTA and coronary angiography（CAG）.Results： Among 1516 cases who underwent coronary CTA, 615 cases of coronary were nomal. 411 cases of coronary stenosis were mild stenosis （less than 50%）, 195 cases were moderate stenosis（50%-75%）, 170 cases were severe stenosis（more than 75%）. of them, 125 cases were implanted with stents before Among 182 cases who underwent both coronary CTA and CAG, 164 cases of coronary CTA and CAG were correctly identified in detecting coronary stenosis. 18 cases of coronary CTA and CAG were inconsistent.Conclusion： 320-slice coronary CTA is an important means of non-invasive examination in patients with coronary heart disease, it is can help to classification and treatment for coronary heart disease, and it is also a preferred method of medical screening of high-risk population of coronary heart disease.