不同对比剂剂量及年龄对肝脏双期增强扫描的技术探讨  

Effects of different dose of contrast agent and patient′s age on image quality of liver using dual phase MSCT scanning

作　　者：陆琳[1] 赵宏文 王筱丽[1] 

机构地区：[1]昆明医学院附属第一医院CT室,昆明650032 [2]德宏州人民医院CT室

出　　处：《放射学实践》2004年第11期798-800,共3页Radiologic Practice

摘　　要：目的 :分析多层螺旋CT扫描中使用高压注射器在不同增强剂量以及不同年龄组对肝脏动脉期和静脉期显影效果的影响。方法 :全部病例 (3 60例 )均使用MarconiMx 80 0 0多层螺旋CT和Medrad高压注射器。对比剂剂量按1.0ml/kg和 1.5ml/kg分为 2组行增强扫描 ,1.0ml/kg组 12 2例 ,1.5ml/kg组 2 3 8例 ;每组按照年龄分为 3组 ,18～ 3 9岁共 5 8例、40～ 5 9岁共 160例、60岁以上共 14 2例。结果 :分别测量各组肝脏双期增强CT图像上动脉期腹腔干和门脉期左右门静脉汇合处的CT值。对比分析发现两组对比剂量肝脏双期增强扫描效果均无明显差异 ,但青年组 (18～ 3 9岁 )与老年组 (>60岁 )比较发现门脉期有差异性。结论 :本文所选择对比剂剂量 1.0ml/kg是可行的 ,但是青年组行肝脏双期扫描时间需要提前。Objection:To analyze the effect of different dose of contrast agent on the image quality of liver during hepatic and portal venous phase using multi-slice spiral CT and power injector.Methods:CT scan was performed in all 360 cases using MSCT and power injector.The patients were divided into 2 groups according to the dose of the contrast agent.the dose was 1.0ml/kg (n=122) and 1.5ml/kg (n=238) respectively.Each group was further divided into 3 subgroups according to the age of the patients,age range 18～39 years,40～59 years,and over 60 years.respectively.Results:The CT values of celiac trunk during the artrerial phase and CT values of main portal vein during the portal venous phase were measured and compared for each groups.There was definite difference of CT value in the portal vein during portal venous phase between the groups with age range 18～39 and the groups with age range over 60 years.Conclusion:The dosage of 1.0ml/kg is feasible,but the delay time for the younger patients should be shorter than that for the older patients.

关 键 词：多层螺旋CT 高压注射器 肝脏 对比剂 

分 类 号：R816.5[医药卫生—放射医学]