胃十二指肠动脉解剖变异的多层螺旋CT血管造影研究  

Study on MSCTA Manifestations of Anatomical Variation of Gastroduodenal Artery

作　　者：罗东[1] 张应和[1] 范真真[1] 潘小舟[1] 覃智颖[1] 岑贤友[1] 费西平 李杜[1] 顾瑞基[1] 

机构地区：[1]广州医学院附属广佛医院影像中心,广东佛山528251

出　　处：《中国CT和MRI杂志》2013年第4期78-81,共4页Chinese Journal of CT and MRI

摘　　要：目的探讨胃十二指肠动脉(GDA)变异的分型、发生率及表现。方法回顾性分析行上腹部多层螺旋CT血管造影(MSCTA)检查且GDA显示完整者1810例,采容积再现(VR)血管生长技术(AV)对GDA进行重建,以GDA起源和分支的解剖学描述为标准,将变异分为3型:Ⅰ型为起源变异,Ⅱ型为分支变异(IIa型为正常起源于GDA的分支发自其他动脉,Ⅱb型为正常起自其他动脉的分支发自GDA,Ⅱc型为上述2型分支变异的混合表现),Ⅲ型为同时存在GDA起源及分支变异,分析各型的表现及发生率。结果 1810例患者中,GDA变异62例,总的发生率3.43%(62/1810),Ⅰ型10例,发生率0.55%(10/1810);Ⅱ型49例,发生率2.71%(49/1810),其中,Ⅱa型8例,发生率0.44%(8/1810),Ⅱb型28例,发生率1.55%(28/1810);Ⅱc型13例,发生率0.72%(13/1810)。胰横动脉起自GDA的发生率0.44%(8/1810),替代和(或)副右肝动脉起自GDA的发生率1.5%(27/1810),胰十二指肠上动脉起自肝固有动脉、肝右动脉、替代或副肝右动脉的发生率1.0%(18/1810)。结论 MSCTA能清楚显示GDA解剖及变异,准确进行分型。Objective To explore the types, incidence rates and manifestations of variation of Gastroduodenal Artery. Methods 1810 cases which underwent MSCTA and displayed complete GDA were retrospectively analyzed. GDA was reconstructed by vessel adding technique of volume rendering. Three types of variation could be divided according to the differences of GDA origins and anatomy of branches： type I is the cases with anomalous origins. Type II is the cases with anomalons branches （type IIa is the cases originated from other arteries, while normally from branches of GDA, type IIb is the cases originated fiom GDA while normally fi＇om other arterial branches, type IIc is the cases mixed with both of them）, and type III is the cases with both GDA originated and variation of branches. Three types are analyzed separately according to the features and total incidence rates. Results In 1810 patients, there were 62 cases with GDA variation, and the total incidence rate was 3. 43% （62/1810）. Within these cases, 10 cases were type I, and the incidence rate was 0.55% （ 10 / 1810）; 49 cases were type II, and the incidence rate was 2.71% （49 / 1810）, in which 8 cases were type IIa, and the incidence was 0.44% （8/1810）, 28 cases were type lib, and the incidence was 1.55% （28/1810）; and 13 cases were type llc, and the incidence was 0.72% （13/1810）. The incidence rate of transverse pancreatic artery origin fi＇om the GDA was 0. 44% （8/1810）. The incidence of substitution and accessory right hepatic artery was 1.5% （27/1810）. The incidence rate of superior pancreatic duodenal artery originated from the proper hepatic artery, right hepatic artery, replacement or accessory right hepatic artery was 1% （ 18/1810）. Conclusion MSCTA can clearly show the variants and the anatomy of GDA, and show the type accurately.

关 键 词：十二指肠动脉 变异 体层摄影术 X线计算机 

分 类 号：R573.1[医药卫生—消化系统] R814.42[医药卫生—内科学]