CAJ | 학술논문

目的：研究大脑中动脉M1段的空间形态。方法：回顾性分析2011年1月1日至6月30日磁共振血管成像（magnetic resonance angiography，MRA）检查资料，纳入794条大脑中动脉（middle cerebral artery，MCA）（左侧400条，右侧394条），分别分析轴位、后前位和侧位视图中M1段的形态，测量M1段的长度，并分析左、右侧M1段形态的相似性。结果：在轴位、后前位及侧位这三个视图中，MCA M1段在正常人群中的形态分布均表现为C形＞L形＞S形。在轴位，约373条（47％） MCA M1段表现为C形，其中有340条（42．8％）表现为弓向背侧的C形，仅33条（4．2％）表现为弓向腹侧的C形；在后前位，约322条（40．6％）MCA M1段表现为C形，其中有262条（33．0％）表现为弓向头侧的C形，60条（7．6％）表现为弓向足侧的C形。左、右侧M1段形态相似比例为：轴位27．2％（114／419），后前位42．7％（179／419），后前位M1段形态相似度更高。随着年龄的升高，在轴位视图，L形向C形的转化非常明显，而S形仅有轻度升高；在后前位视图中，L形同时向C形及S形有转化。结论：MCA M1段在轴位及后前位视图中表现为不同的形态，可能参与颅内动脉粥样硬化的发生和发展。
목적：연구대뇌중동맥M1단적공간형태。방법：회고성분석2011년1월1일지6월30일자공진혈관성상（magnetic resonance angiography，MRA）검사자료，납입794조대뇌중동맥（middle cerebral artery，MCA）（좌측400조，우측394조），분별분석축위、후전위화측위시도중M1단적형태，측량M1단적장도，병분석좌、우측M1단형태적상사성。결과：재축위、후전위급측위저삼개시도중，MCA M1단재정상인군중적형태분포균표현위C형＞L형＞S형。재축위，약373조（47％） MCA M1단표현위C형，기중유340조（42．8％）표현위궁향배측적C형，부33조（4．2％）표현위궁향복측적C형；재후전위，약322조（40．6％）MCA M1단표현위C형，기중유262조（33．0％）표현위궁향두측적C형，60조（7．6％）표현위궁향족측적C형。좌、우측M1단형태상사비례위：축위27．2％（114／419），후전위42．7％（179／419），후전위M1단형태상사도경고。수착년령적승고，재축위시도，L형향C형적전화비상명현，이S형부유경도승고；재후전위시도중，L형동시향C형급S형유전화。결론：MCA M1단재축위급후전위시도중표현위불동적형태，가능삼여로내동맥죽양경화적발생화발전。
Objective:To study the morphology of middle cerebral artery ( MCA ) M1 segment .Me-thods:We selected the MRA data of 794 MCA (400 of the left side and 394 of the right side ) from Ja-nuary 1, 2011 to June 30, 2011 consecutively and analyzed the morphology of the MCA M 1 segment in axial, anteroposterior and lateral view , measured the length of the M1 segment, and analyzed the simila-rity of the left and right side M1 segment morphology .Results:In axial, anteroposterior and lateral view , the MCA M1 segment showed C-shape >L-shape >S-shape .In axial view , it was about 373 ( 47%) M1 segment performance for the C-shape, of which 340 (42.8%) M1 segments showed bowing to the dorsal side, only 33 (4.2%) M1 segments showed bowing to the ventral side .In anteroposterior view, it was about 322 (40.6%) M1 segments of the performance of the C-shape, of which 262(33.0%) M1 segments showed a bowing to the superior , 60 (7.6%) showed bowing to the inferior .The similarity of the left and right MCA M1 segments was 27.2% (114/419) in axial view and 42.7% (179/419) in anteroposterior view.It was more similar in anteroposterior view than in axial view .Along with the increase of age, in the axial view, L-shape converted to C-shape very obviously, but only mildly elevated in S-shape .In anteroposterior view , the L-shape converted to the C-shape or S-shape along with the increase of age.Conclusion:The different morphology of MCA M1 segment in axial and anteroposterior view may be involved in the development of intracranial atherosclerosis .