CAJ | 학술논문

目的：探讨64层螺旋C T主动脉血管成像中使用低剂量对比剂的可行性。方法60例主动脉血管成像患者，随机分为A、B、C三组：A组对比剂量80ml＋生理盐水20ml冲洗；B组对比剂量70ml＋生理盐水30ml冲洗；C组对比剂量60ml＋生理盐水40ml冲洗。注射速率均为5ml/s ，扫描延迟时间采用自动触发技术。原始数据均传至工作站，进行图像重组，并测量升主动脉、T7及L2水平降主动脉、主动脉分叉处CT 值。由主治医师及副主任医师各一名共同阅片，对血管强化程度、主要分支血管显示清晰度进行评价。结果 A、B、C三组血管强化程度、主要分支血管显示清晰度均无统计学差异。结论在64层螺旋CT主动脉血管成像中，应用低剂量对比剂60ml＋生理盐水40ml冲洗，图像质量满意，可以满足临床诊断要求。
목적：탐토64층라선C T주동맥혈관성상중사용저제량대비제적가행성。방법60례주동맥혈관성상환자，수궤분위A、B、C삼조：A조대비제량80ml＋생리염수20ml충세；B조대비제량70ml＋생리염수30ml충세；C조대비제량60ml＋생리염수40ml충세。주사속솔균위5ml/s ，소묘연지시간채용자동촉발기술。원시수거균전지공작참，진행도상중조，병측량승주동맥、T7급L2수평강주동맥、주동맥분차처CT 치。유주치의사급부주임의사각일명공동열편，대혈관강화정도、주요분지혈관현시청석도진행평개。결과 A、B、C삼조혈관강화정도、주요분지혈관현시청석도균무통계학차이。결론재64층라선CT주동맥혈관성상중，응용저제량대비제60ml＋생리염수40ml충세，도상질량만의，가이만족림상진단요구。
Objective To evaluate the feasibility of low-dose contrast media in aorta angiography by using spiral comput-er tomography .Methods 60 consecutive patients undergoing aorta angiography were allocated into three groups (group A :contrast media 80 ml plus saline 20 ml;group B:contrast media 70 ml plus saline 30 ml;Group C :contrast media 60 ml plus saline 40 ml randomly) .Injection speed was fixed at 5 ml/s .Auto trigger scanning delay time was applied .Image reconstruction was processed when original data were transferred to workstation .The CT values in different anatomic sites ,such as ascending aorta ,descending aorta and aorta crotch ,were collected .Strengthen effect presented by scoring of main branch resolution was evaluated by both an attending doctor and a chief attending doctor .Results No significant differences were noted among three groups ( P value>0 .05) in terms of CT values and subjective scoring .Conclusion Substantial reductions of contrast media dose are achievable at multi-detector angiography of the aorta without compromi-sing image quality and diagnostic performance .