多层螺旋CTA对肠系膜上动脉优化显示  

MULTI-SLICE SPIRAL CTA IN OPTIMIZED DISPLAY OF SUPERIOR MESENTERIC ARTERY

作　　者：张东香[1] 陈伟彬 Zhang Dongxiang Chen Weibin(Depaetment of Radiology, Tangshan Maternity and Child Healthcare Hospital,Tangshan 063000, Chin)

机构地区：[1]河北省唐山市妇幼保健院放射科,063000 [2]华北理工大学附属医院CT室

出　　处：《中国煤炭工业医学杂志》2017年第9期1023-1026,共4页Chinese Journal of Coal Industry Medicine

基　　金：河北省科技计划项目(编号:12277783)

摘　　要：目的探讨多层螺旋CTA肠系膜上动脉显示中,应用低剂量低浓度对比剂注射方式的可行性。方法选取行肠系膜上动脉CTA检查的患者120例,分为常规组和双低组,每组患者各60例。常规组注射对比剂碘普罗胺(370mgI/ml),注射剂量根据体重计算(1.0ml/kg);双低组注射对比剂碘佛醇(320mgI/ml),注射剂量根据(体重×1.0ml/kg-10ml)计算。分别测量二组图像中肠系膜上动脉起始部和L_2椎体水平处的CT值。计算二组患者对比剂注射剂量。记录二组图像质量评分情况。结果常规组肠系膜上动脉起始部和L_2椎体水平处CT值与双低组肠系膜上动脉起始部和L_2椎体水平处CT值比较;差异有统计学意义(P<0.05)。常规组和双低组的对比剂用量分别为(68.07±9.59)ml和(57.09±9.41)ml,差异有统计学意义(P<0.05)。常规组和双低组的图像质量评分差异无统计学意义(P>0.05)。结论多层螺旋CT肠系膜上动脉CTA中,应用低剂量低浓度对比剂注射方式是可行的,可获得满足临床诊断要求的图像,且有效减少碘剂总量,降低肾毒性。Objective To discuss the possibility that the contrast agent with low dosage and low concentration can be used for injection with MSCT.Methods Selecting 120 patients who has been examined by S.M.A CTA and dividing them into 2 groups randomly,one is routine group and the other is double-low group,each group has 60 patients.The patients in routine group were injected with contrast agent：iopromide（370mgI/mL）whose injection dosage was calculated by the weight（1.0mL/kg）;while the patients in double-low group were injected with contrast agent：ioversol（320mgI/mL）whose injection dosage was calculated by a formula that weight×1.0mL/kg-10 mL.Measuring the CT value in images of the two groups were separately both at origin of superior mesenteric artery and L2 vertebral horizontal position.At last,calculating the total injection dosage of contrast agent and iodine agent in these two groups and meanwhile recording the scores of image quality in these two groups.Results The CT value at origin of superior mesenteric artery and L2 vertebral horizontal position between routine group and in double-low group;these differences had statistical significance（P〈0.05）.The dosage of contrast agent in routine group and doublelow group are：68.07±9.59 mL and 57.09±9.41 mL,these differences had statistical significance（P〈0.05）;The difference of image quality between routine group and double-low group had no statistical significance（P？0.05）.Conclusion It is viable to use the low concentration low dosage contrast agent for injection in the process of S.M.A CTA.This method can get satisfied image to meet the needs of the clinical diagnosis,decrease the iodine injection dosage and reduce the nephrotoxicity.

关 键 词：低剂量 低浓度 低辐射剂量 多层螺旋CT 肠系膜上动脉 

分 类 号：R445.3[医药卫生—影像医学与核医学]