Revolution CT联合SSF技术对高心率胸痛三联症成像的应用研究  

Application research of revolution CT combined with snap shot freeze in high heart rate TRO

作　　者：王科鑫 陈月芹[1] 魏君臣[1] 姜鑫 王培洁 王森 WANG Kexin;CHEN Yueqin;WEI Junchen;JIANG Xin;WANG Peijie;WANG Sen(Department of Medical Imaging,Affiliated Hospital of Jining Medical University,Jining 272001,P.R.China;The First Clinical College of Jining Medical University,Jining 272013,P.R.China)

机构地区：[1]济宁医学院附属医院影像科,山东济宁272001 [2]济宁医学院第一临床学院,山东济宁272013

出　　处：《医学影像学杂志》2021年第6期935-939,共5页Journal of Medical Imaging

基　　金：山东省高等学校科技计划项目(编号:J14LL54)。

摘　　要：目的探讨Revolution CT联合SSF(snap shot freeze,SSF)技术在高心率(80~100)次/min胸痛三联症(triple-rule-out,TRO)的应用价值。方法选取TRO检查患者100例,随机分为观察组和对照组各50例,观察组采用Revolution CT结合SSF技术联合扫描,对照组采用双源CT(第二代)一站式螺旋扫描。对比2组图像主动脉弓AOAR、肺动脉干PA、左肺动脉干LPA、右肺动脉干RPA、左冠状动脉主干LMA、右冠状动脉RCA近端的CT值、噪声、信噪比(SNR)、对比噪声比(CNR),及冠状动脉主观评分和辐射剂量。结果两组图像的CT值均>300 HU,客观评价指标均能较好的满足临床诊断需求。观察组冠状动脉图像主观评分优秀率为90.37%(675/750),对照组95.40%(717/750),差异无统计学意义(χ^(2)=0.231,P=0.972)。观察组所受辐射剂量显著低于对照组。结论高心率TRO患者采用Revolution CT结合SSF技术联合扫描模式,获得较好的图像质量且显著减少患者所受辐射剂量,值得推广。Objective To explore the application value of revolution CT combined with snap shot freeze(SSF)in high heart rate chest pain triad(TRO).Methods 100 patients with TRO examination were randomly divided into observation group and control group,with 50 in each group.The observation group adopted Revolution CT combined with SSF combined scanning mode,and the control group adopted dual-source CT(second generation)one-stop spiral scanning method.We compared the CT values,noise,signal-to-noise ratio(SNR),and contrast noise ratio(CNR)of the aortic arch,pulmonary artery,left pulmonary artery,right left pulmonary artery,left coronary artery,and right coronary artery in the two groups.In addition,the subjective score of coronary image and the radiation dose of the 2 groups images were compared.Results The CT values of both groups of images were>300 HU,objective evaluation indexes can better meet the needs of clinical diagnosis.The subjective score of coronary artery images in the observation group was 90.37%(675/750),and the control group was 95.40%(717/750).The difference was not statistically significant(χ^(2)=0.231,P=0.972).The radiation dose of the observation group was significantly lower than that in the control group.Conclusion TRO patients with fast heart rate using revolution CT combined with SSF technology combined scanning mode can better meet clinical diagnosis.In addition,it reduces the radiation dose to patients and is worthy to popularize.

关 键 词：胸痛三联症 联合扫描 辐射剂量 体层摄影术 X线计算机 

分 类 号：R543.3[医药卫生—心血管疾病] R814.42[医药卫生—内科学]