CAJ | 학술논문

目的了解人脑Willis动脉环"三分叉"的解剖特点,为颅底外科及介入治疗提供参考依据.方法 45例(90侧)经10%甲醛溶液处理的人脑标本在光学显微镜下观察、测量和摄影.结果 "三分叉"的出现率为15.6%(7/45),其中大脑前动脉(ACA)双侧A1段管径明显不等(血管外径相差0.5 mm以上)6例(13.3%),一侧A1段缺如1例(2.2%).前交通动脉(AcoA)变异率为62.2%(28/45),其中单支17例(37.8%),双支25例(55.6%),三支2例(4.4%),缺如1例(2.2%).结论形成"三分叉"原因之一是人脑Willis动脉环中AcoA的复杂解剖变异造成.
목적 료해인뇌Willis동맥배"삼분차"적해부특점,위로저외과급개입치료제공삼고의거.방법 45례(90측)경10%갑철용액처리적인뇌표본재광학현미경하관찰、측량화섭영.결과 "삼분차"적출현솔위15.6%(7/45),기중대뇌전동맥(ACA)쌍측A1단관경명현불등(혈관외경상차0.5 mm이상)6례(13.3%),일측A1단결여1례(2.2%).전교통동맥(AcoA)변이솔위62.2%(28/45),기중단지17례(37.8%),쌍지25례(55.6%),삼지2례(4.4%),결여1례(2.2%).결론 형성"삼분차"원인지일시인뇌Willis동맥배중AcoA적복잡해부변이조성.
Objective To know about the anatomic characteristics of "the Trifurcation" of human anterior circle of Willis, so as to provide reference for the cranial base surgery and interventional therapy. Methods Forty-five (90 sides) adult cadaver heads fixed by formalin were dissected under microscope, observed, measured and photographed. Results "The Trifurcation" was found in 15.5% (7/45) of the specimens. The diameter of the left and right A1 of ACA were different (the difference was 0.5 mm or more) in 6 specimens (13.3%). One side A1 absence was found in one specimen (2.2 %). The mutation rate of AcoA is 62.2 % (28/45). Examination of AcoA showed single branch in 17 (37.8%) specimens, two branches in 25 (55.6%), and three branches in 2(4.4 %), and was absent in one 1 (2.2 %). Conclusion The complex variation of the AcoA in the anterior circle of Willis is one of the causes of trifurcation.