螺旋CT肝动脉期最佳扫描时像研究的进展  

Advances in the Study of Hepatic Arterial Phase Optimal Scanning by Spiral CT

作　　者：张皓 李琳 吕发金[3] ZHANG Hao;LI Lin;LV Fajin(Department of Radiology,Dianjiang County People’s Hospital of Chongqing,Chongqing 408300,China;Department of Pharmacy,Dianjiang County People’s Hospital of Chongqing,Chongqing 408300,China;Department of Radiology,The First Affiliated Hospital of Chongqing Medical University,Chongqing 400016,China)

机构地区：[1]重庆市垫江县人民医院放射科,重庆408300 [2]重庆市垫江县人民医院药剂科,重庆408300 [3]重庆医科大学附属第一医院放射科,重庆400016

出　　处：《中国医疗设备》2020年第12期164-170,共7页China Medical Devices

基　　金：重庆市垫江县科委技术研发与示范应用项目(djkjzdxm2019jsyfysfyy002)。

摘　　要：螺旋CT肝脏多期增强扫描是肝内病灶检出和诊断的重要技术。本文研究肝动脉期最佳扫描时相在经验法、阈值触发法、小剂量测试法的研究中呈现出不同的技术方案和参考值。另外,总结分析多种相互关联的因素(与受检者和注射相关)影响肝动脉对比增强的幅度和时机,发现体重、造影剂总量和碘浓度、生理盐水冲洗对增强强度的影响较大,而心输出量、造影剂注射时间、注射速率对增强的时间模式影响较大。肝动脉最佳扫描时相的对比增强技术方案会因受检者和临床成像应用目标的不同而适当调节。通过本文综述,有利于放射科医师和技术人员了解各项技术的优劣势和常用参数以及对比增强影响因素,注意CT扫描和造影剂应用的参数配搭,进而合理调试对比增强技术方案,更充分发挥螺旋CT肝脏对比增强技术的优势,让受检者受益。Spiral CT liver multi-phase enhancement scanning is an important technique for the detection and diagnosis of intrahepatic lesions.In this paper,it presents different technical schemes and reference values of contrastive enhancement in Empirical-method,Threshold Triggering method and Low-dose test method.Besides,a variety of patient-related and injection-related factors influence the magnitude and timing of hepatic artery contrast enhancement.Although these factors are inter-related,some(body weight,contrast volume and iodine concentration,saline irrigation)have great influence on the strength enhancement,whereas others(cardiac output,contrast agent injection duration,contrast injection rate)have great influence on the enhanced time pattern.Meanwhile,the contrast-enhanced technique for optimal scanning of hepatic arteries may vary depending on the patients and the target of the clinical imaging application.Radiologists and technicians should understand the advantages and disadvantages of various technologies and common parameters,and the influencing factors of contrast enhancement,and pay attention to the matching of the parameters of CT scan and contrast agent application,which is conducive to the rational debugging of the contrast enhancement technology scheme,and can give full play to the advantages of spiral CT liver contrast enhancement technology to benefit the patients.Therefore,this review provides a reference for clinical research.

关 键 词：螺旋CT 对比增强 肝动脉期 最佳扫描时相 影响因素 

分 类 号：R735.7[医药卫生—肿瘤]