心电图编辑软件在双源CT冠状动脉成像中的应用价值  

Clinical Applications of ECG-editing in Dual-Source CT Coronary Angiography

作　　者：周长圣[1] 郑玲[1] 黄清玲[1] 张龙江[1] 赵艳娥[1] 黄伟[1] 陈鹏[1] 孙志远[1] 梁泉[1] 李林[1] 蔡军[1] 卢光明[1] 

机构地区：[1]南京军区南京总医院医学影像科,江苏南京210002

出　　处：《临床放射学杂志》2009年第1期45-49,共5页Journal of Clinical Radiology

摘　　要：目的探讨心电编辑技术在双源CT冠状动脉成像(DSCTCA)中的应用价值。资料与方法DSCTCA检查过程中出现心电图信号异常的患者74例,男37例,女37例,年龄33～90岁,平均(59.9±12.1)岁,行回顾性心电门控冠状动脉CT成像(CTA)后,使用Insert Sync;Disable Sync;Delete Sync;Shift R-peak四种方法对其进行心电编辑。根据美国心脏病协会的冠状动脉分段原则,由两名有经验的放射科医师对心电编辑前后冠状动脉各段成像质量进行分别评分(1～4分)。并利用SPSS11.5版本软件作统计学处理。结果74名患者的图像质量评分总均值,编辑前为2.34±0.79;编辑之后为3.55±0.35;心电编辑前后的图像质量评分比较,仅第5段无统计学意义,其余14段心电编辑前后的图像质量评分比较有统计学意义。结论心电编辑可明显地减轻或消除心律失常或心电图异常导致的冠状动脉CTA伪影,能显著提高冠状动脉成像质量。Objective To evaluate clinical value of ECG-editing technique in dual-source CT coronary angiography. Materials and Methods 74 consecutive patients （ 37 men, 37 female; age 59.9 ± 12.1 years, range 33-90 years） with abnormal ECG signal during DSCT exam were included into this study. A retrospective gating technique and ECG editing technique （Insert Sync; Disable Sync; Delete Sync; Shift R peak） were used. Two experienced radiologists evaluated in consensus all pre-editing and post-editing reconstructed images and recorded scores according to the guideline of AHA for coronary segmentation on a per segment basis. All statistical analysis was performed with commercially available software （SPSS 11.5, SPSS）. Results In 74 patients the overall mean image quality before and after ECG editing was 2.34 ± 0.79 and 3.55 ± 0. 35, respectively. These results showed that ECG editing significantly improved image quality of coronary artery segments in patients with ECG signal abnormalities（P 〈 0.01 ） except segment 5 （ P 〉 0.05）. Conclusion ECG editing technique significantly improves image quality of coronary artery segments because it can reduce and compensate for part of artifacts produced by heart rhythm irregularities during CT coronary angiography.

关 键 词：双源CT 冠状动脉成像 心电信号 体层摄影术 X线计算机 

分 类 号：R816.2[医药卫生—放射医学] R540.41[医药卫生—临床医学]