肝动脉数字减影血管造影成像技术分析及图像质量控制  

Image Technique Analysis and Quality Control of Hepatic Artery Digital Subtraction Angiography

作　　者：薛玉富[1] 罗勇[2] 

机构地区：[1]重庆三峡中心医院介入科重庆404000 [2]重庆三峡中心医院普通放射科重庆404000

出　　处：《中国医学影像学杂志》2012年第10期789-792,共4页Chinese Journal of Medical Imaging

摘　　要：目的探讨肝动脉数字减影血管造影(DSA)的成像技术要领及影响图像质量的因素。资料与方法200份实行质量控制前(非质控组)及质量控制后(质控组)的肝动脉DSA片,依据照片甲级片率判定标准计算甲、乙、丙级片率,比较两组DSA片的非甲级片缺陷因素(包括运动或饱和伪影、导管位置欠精确、造影剂注射参数不当、窗宽窗位调节不当、诊断区未包全、照相信息捕捉不全、设备性能)发生率。结果质控组甲、乙、丙级片率分别为80.98%、14.13%、4.89%;非质控组分别为71.35%、18.61%、10.04%。质控组非甲级片缺陷因素发生率显著低于非质控组(χ2=36.968,P<0.05),在导致非甲级片的缺陷因素中,伪影居多,导管位置欠精确次之。结论影响肝动脉DSA图像质量的因素主要有成像技术、注射参数、设备性能、后处理及照相技术,实施质量控制能显著提高肝动脉DSA的图像质量。Purpose To explore the image technical key points and quality control of epatic artery DSA.Materials and Methods 200 patients images randomly selected before and after quality control were graded as A,B,C according to the gradation system,the non A defect factors including movement or saturated artifact,catheter position unaccurate,contrast medium injection parameters improper,window width and window level regulated inappropriate,diagnosis area not all-round,photography information captured incomplete and equipment performance.Occurred cases and the ratio of total sequence number were comparative analyzed and discussed.Results The image quality of grade A,B,C was 80.98%,14.13%,4.89% in quality control group,and 71.35%,18.61%,10.04% in non quality control group.the non A defect factors in the ratio of total sequence number of quality control group was obviously lower than that of non quality control group（χ 2 =36.968,P0.05）.Conclusion The influencing factors of hepatic artery DSA include equipment status,image technique,injection parameters,post-processing techniques and photography,the image quality can be significantly improved by quality control.

关 键 词：肝疾病 肝动脉 血管造影术 数字减影 质量控制 

分 类 号：R735.7[医药卫生—肿瘤] R730.42[医药卫生—临床医学]