256排Revolution多参数调节下低剂量心脏冠脉成像应用  

Application of 256-row Revolution CT with Multi-parameter Regulation for Low-dose Coronary Computed Tomographic Angiography

作　　者：唐云波 郑林丰[2] 欧阳欣 许静波[2] 王治愚 TANG Yun-bo;ZHENG Lin-feng;OUYANG Xin;XU Jing-bo;WANG Zhi-yu(Department of Radiology,Xiangtan Central hospital,Xiangtan,Hunan,411100,China;Department of Radiology,General Hospital,Shanghai Jiao Tong University,Shanghai,200080,China)

机构地区：[1]湖南省湘潭市中心医院放射科,湖南湘潭411100 [2]上海交通大学附属第一人民医院放射科,上海200080

出　　处：《现代生物医学进展》2018年第10期1922-1926,共5页Progress in Modern Biomedicine

基　　金：上海市浦江人才计划项目(17PJ1408000);上海市自然科学基金资助项目(17ZR1422500);上海交通大学医工(理)交叉基金资助项目(YG2016MS26)

摘　　要：目的:研究256排Revolution多参数调节下低剂量扫描心脏冠脉成像(Coronary computed tomographic angiography,CCTA)的应用。方法:回顾性分析2016年3月15日至5月15日间在我院256排CT行CCTA的患者,分为心率稳定试验组(n=54例)和心率不稳定试验组(n=41例),同时选取在我院64排VCT行CCTA的患者为对照组(n=116例),对三组CCTA图像质量行主观和客观评估,比较有效辐射剂量的差异。结果:256排CT检查成功率和图像质量的主观评价均优于对照组(P<0.05);信噪比(SNR)、对比噪声比(CNR)与对照组差异无统计学意义(P>0.05);但有效辐射剂量明显降低(P<0.05)。结论:256排CT多参数调节下检查冠脉在保证图像质量下可有效降低辐射剂量。Objective： To study the feasibility of 256-row revolution computed tomography（CT） with optimal multi-parameter selection for low-dose coronary computed tomographic angiography（CCTA）.Methods： This retrospective study enrolled 95 cases undergoing CCTA with 256-row CT in our hospital from March 15,2016 to May 15,2016 and these patients was divided into two groups： stable heart rate group（n=54） and unstable heart rate group（n=41）.Additionally,we selected 116 cases whom underwent CCTA examination with 64-slice VCT as control group（n=116）.Then,we evaluated the image quality of subjective and objective score and compared effective radiation dose in these three groups.Results： For CCTA with 256-row CT,both the success rate and subjective evaluation of image quality were superior to conventional 64-slice VCT（control group,P〈0.05）.The signal-to-noise ratio（SNR） and contrast-to-noise ratio（CNR） were not statistically significant between the three group（P〈0.05）.However,the radiation dose was significantly reduced than the control group（P〈0.05）.Conclusion： With optimal multi-parameter regulation,256-row revolution CT can effectively reduce the radiation dose while preserve diagnostic image quality for CCTA.

关 键 词：心脏冠脉成像 多参数调节 自动毫安 自动千伏 图像迭代重建 

分 类 号：R445[医药卫生—影像医学与核医学] R816.2[医药卫生—诊断学]