低剂量320排容积CT成像评价左心功能的临床价值  

Clinical value of low- dose 320-MDCT in the evaluation of left ventricular function

作　　者：潘雪娜[1,2] 周丽华[2] 鲁琳[2] 方玉荣[2] 黄奕巧 颜妙如 娄明武[2] 申云霞[2] 

机构地区：[1]广州中医药大学博士后流动站,广东广州510000 [2]深圳市龙岗中心医院影像科,广东深圳518116

出　　处：《牡丹江医学院学报》2016年第2期16-18,共3页Journal of Mudanjiang Medical University

基　　金：深圳市科创委基础研究基金项目(JCYJ20140411150309468);深圳市卫人委基金项目(201401095);深圳市龙岗区科技局基金项目(201406053001026);深圳市科创委战略性新兴产业发展专项基金(cxzz20140505091419405)

摘　　要：目的探讨低剂量320排容积CT测定心功能的准确性及临床意义。方法 1周内34例冠心病患者分别行低剂量320排容积CT和超声心动图检查。以超声心动图的心功能结果为标准分析低剂量320排容积CT测量左室功能结果的准确性;由两名医师通过双盲法分别对所有的图像质量进行评分;记录每位患者的剂量长度积值(DLP),计算有效辐射剂量。结果低剂量320排容积CT成像的有效辐射剂量为(2.3±0.3)m Sv;图像质量评分均不低于3分,满足临床诊断需要;测定的心功能指标与超声心动图测量的左心室功能指标的差异无统计学意义(P>0.05)。结论低剂量320排容积CT成像可以准确评价左心功能,一次成像不但可以评价心功能、冠脉血管还可以评价心肌血流,具有很高的临床应用前景。Objective To explore the accuracy and clinical value of low- dose 320- MDCT in assessing left ventricular function. Methods 34 patients with coronary artery disease were collected. Low- dose 320- MDCT and echocardiography were performed in one week. The accuracy of left ventricular function parameters was evaluated with echocardiography as standard of reference. General image quality were graded（ scale： 1- 5） by two radiologists blindly. Records of dose- length product（ DLP） and the effective dose（ ED） of each patient were calculated. Results The effective dose was（ 2. 3 ± 0. 3 m Sv）. Image quality score was no less than 3points,could meet the needs of the clinical diagnosis. No significant difference was found among left ventricular function parameters between low- dose 320- MDCT and echocardiography（ P〉0. 05）. Conclusion Low- dose 320- MDCT could accurately evaluate the left heart function. An imaging could not only evaluate the left ventricular function and coronary blood vessels but also evaluate myocardial blood flow. Low- dose 320- MDCT should have a high clinical application prospect.

关 键 词：低剂量 320排CT 超声心动图 左心室功能 

分 类 号：R445[医药卫生—影像医学与核医学]