目的 探讨320排动态容积CT冠 状动脉成像在房颤射频消融中的应用价 值。方法 选取我院收治的60例房颤患 者及40例健康者(对照组)为研究对象， 采用320排动态容积CT冠状动脉成像诊 断肺静脉异常、左心房血栓及冠状动 脉的情况。结果 房颤组有23例肺静脉 变异(38.3%)，对照组有17例发生变异 (34.0%)。房颤组与对照组在不同性别以 及不同病变部位方面肺静脉的变异率均 无统计学意义(P>0.05)。房颤组的左、 右上肺静脉口长径、短径，左、右下肺 静脉口长径、短径均大于对照组，差异 有统计学意义(P<0.05)。320排CT对左心 房血栓的诊断率与超声心动图无统计学 意义(P>0.05)。60例心房纤颤患者发现 有42例患者有冠状动脉硬化斑块病变， 管腔呈轻-重度狭窄。结论 320排动态容 积CT冠状动脉成像能够较好地诊断房颤 患者肺静脉异常的情况，可作为房颤射 频消融术前常规的影像学检查手段。

Objective To investigate the clinical value of 320-row dynamic volume CT coronary angiography in radiofrequency ablation for atrial fibrillation in. Methods 60 cases of patients with atrial fibrillation in our hospital and 40 healthy subjects (the control group) were as the research object; they were used 320-row dynamic volume CT coronary angiography and abnormal enhancement of left atrial thrombus in the diagnosis of pulmonary vein. Results There were 23 cases (38.3%) of variation of pulmonary in atrial fibrillation group, while 17 (34.0%) cases in the control group. The variation of pulmonary vein in the AF group and the control group were no statistically significant in different gender and different parts (P>0.05). The left and right upper pulmonary vein long diameter and short diameter, left and right, vein under long diameter and short diameter in the AF group was longer than that in the control group, the difference was statistically significant (P<0.05). Left atrial thrombus diagnosis rate by 320-Row and echocardiography was no statistically significant (P>0.05). In 60 cases of patients with atrial fibrillation，42 patients had coronary plaque lesions lumen which showed mildsevere stenosis. Conclusion 320-row dynamic volume CT coronary angiography can diagnosis pulmonary venous anomalies well in atrial fibrillation patients, which can be used as a routine imaging before atrial fibrillation ablation imaging method.