256排CT在任意心律下进行冠状动脉成像的应用价值  

Application value of coronary angiography by 256-slice CT scanner in free rhythm of the heart

作　　者：顾文豪[1] 王立环 王彩红[1] 郁一凡 GU Wenhao;WANG Lihuan;WANG Caihong;YU Yifan(Department of Imaging,The First People′s Hospital of Taicang City in Jiangsu Province,Taicang,Jiangsu,215400)

机构地区：[1]江苏省太仓市第一人民医院影像科,江苏太仓215400

出　　处：《实用临床医药杂志》2020年第24期33-36,共4页Journal of Clinical Medicine in Practice

摘　　要：目的探讨256排CT在任意心律下进行冠状动脉成像的应用价值。方法选取116例行冠状动脉检查的患者作为研究对象,将心律齐的86例患者纳入心律齐组,将心律不齐的30例患者纳入心律不齐组。2组受试者均采用Revolution 256排CT联合冠状动脉追踪冻结(SSF)技术进行冠状动脉CT血管成像(CCTA)。比较2组的图像质量、有效剂量(ED)、平均CT值、信噪比(SNR)。结果2组一般资料(年龄、体质量、扫描心率)比较,差异无统计学意义(P>0.05);2组冠状动脉图像质量主观评分比较,差异无统计学意义(P>0.05),且2位评价者的一致性较好(Kappa=0.95);心律齐组平均CT值为(404.73±50.91)Hu,心律不齐组为(386.23±60.25)Hu,差异无统计学意义(P>0.05):心律齐组的SNR为(16.03±3.21),心律不齐组为(14.86±3.29),差异无统计学意义(P>0.05);心律齐组ED为(3.40±0.73)mSv,低于心律不齐组的(4.99±3.32)mSv,差异有统计学意义(P<0.05)。结论256排CT能够在保证图像质量的前提下完成任意心律的冠状动脉成像检查,但心律失常患者的ED略有增加。Objective To investigate the value of coronary angiography by 256-slice CT scanner in free rhythm of the heart.Methods One hundred and sixteen patients who underwent coronary artery examination were enrolled,86 cases with regular heart rhythm were included in regular heart rhythm group,and 30 cases with arrhythmia were in arrhythmia group.All patients were performed coronary CT angiography(CCTA)by 256-slice CT scanner(Revolution CT)combined with snapshot freeze(SSF)technique.The quality of images,the effective dose(ED),average CT value and signal to noise ratio(SNR)were compared.Results There were no significant between-group differences in age,body mass,and heart rate of scanning(P>0.05),and the two assessors had higher consistence(Kappa=0.95).The CT value[(404.73±50.91)Hu in the regular heart rhythm group versus(386.23±60.25)Hu in arrhythmia group]and SNR[(16.03±3.21)in the regular heart rhythm group versus(14.86±3.29)in the arrhythmia group]showed no significant differences between the two groups(P>0.05).The ED was(3.40±0.73)mSv in regular heart rhythm group,which was significantly lower than(4.99±3.32)mSv in the arrhythmia group(P<0.05).Conclusion 256-slice CT scanner could complete coronary artery scanning for patients with free rhythm while preserving good image quality using,but ED is increased in arrhythmia patients.

关 键 词：冠状动脉CT血管成像 心律失常 心率 冠状动脉追踪冻结技术 

分 类 号：R816.2[医药卫生—放射医学] R541.7[医药卫生—临床医学]