CAJ | 학술논문

目的：探讨64层MSCT主动脉血管成像中使用较低剂量对比剂的可行性。方法：主动脉血管成像患者60例，随机分为A、B、C3组。A组为对比剂70mL＋生理盐水30mL；B组为对比剂60mL＋生理盐水40mL；C组为对比剂50mL＋生理盐水50mL。注射速率均为5mL/s，扫描延迟时间采用自动触发技术。原始数据传至工作站后进行图像重组，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1名独立阅片，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、B2组4个解剖部位CT值及主要分支血管显示清晰度差异无统计学意义（P＞0.05），C组与A、B组差异有统计学意义（P＜0.05）。结论：在64层MSCT主动脉血管成像中，应用低剂量对比剂（对比剂60mL＋生理盐水40mL），图像质量可满足诊断要求。
목적：탐토64층MSCT주동맥혈관성상중사용교저제량대비제적가행성。방법：주동맥혈관성상환자60례，수궤분위A、B、C3조。A조위대비제70mL＋생리염수30mL；B조위대비제60mL＋생리염수40mL；C조위대비제50mL＋생리염수50mL。주사속솔균위5mL/s，소묘연지시간채용자동촉발기술。원시수거전지공작참후진행도상중조，측량승주동맥、T7급L2수평강주동맥、주동맥분차처CT치。유주치의사급부주임의사각1명독립열편，대혈관강화정도、주요분지혈관현시청석도진행평개。결과：A、B2조4개해부부위CT치급주요분지혈관현시청석도차이무통계학의의（P＞0.05），C조여A、B조차이유통계학의의（P＜0.05）。결론：재64층MSCT주동맥혈관성상중，응용저제량대비제（대비제60mL＋생리염수40mL），도상질량가만족진단요구。
Objective:to evaluate the feasibility of low-dose contrast media in aorta angiography by using spiral computer tomo-graphy .Methods :60 consecutive patients undergoing aorta angiography were allocated into three groups (group A :contrast media 70mL plus saline 30mL ;group B:contrast media 60mL plus saline 40mL ;group C :contrast media 50mL plus saline 50mL randomly .Injection speed was fixed at 5mL/s .Auto trigger scanning delay time was applied .Image reconstruction was processed when original data was 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 independently .Results:No significant differences were noted between group A and group B(P>0 .05) ,however ,group C showed lower imaging quality in terms of CT values and subjective scoring compared with other two groups(P<0 .05) .Conclusion:Substantial reductions of iodine contrast media dose are achievable at multi-detector angiography of the aorta without compromising image quality and diagnostic performance .