CAJ | 학술논문

目的：通过回顾性采集颅内动脉分叉部的血管形态几何参数，分析血管结构与动脉瘤发生的相关性，为后期前瞻性研究提供理论依据。方法通过回顾确诊颅内动脉瘤的病例资料，得到可以进行颈内－后交通动脉分叉部分叉角、颈内动脉和后交通动脉直径测量的颈内－后交通动脉分叉部动脉瘤共14例为研究组，非颈内－后交通动脉分叉部动脉瘤共15例为对照组。分别测量两组的颈内－后交通动脉分叉部分叉角（Ap），后交通动脉直径（Dp），颈内动脉 C6段（DC6）与 C7段直径（DC7），统计分析颈内－后交通动脉分叉部血管形态几何参数与动脉瘤发生的相关性。结果研究组颈内－后交通动脉分叉部分叉角明显小于对照组（P＜0.01）。根据分叉角进行分层，对分叉角在84°至120°的病例，进行颈内－后交通动脉分叉部血管直径的第二次统计分析，结果显示研究组的后交通动脉直径明显小于对照组（P ＜0.05）；研究组后交通动脉与 C6段直径比值明显小于对照组（P＜0.05）。结论颈内－后交通动脉分叉部分叉角的大小与颈内－后交通动脉分叉部动脉瘤的形成相关，分叉角越小越有可能形成动脉瘤；而在一定分叉角范围内，后交通动脉与颈内动脉直径的比值与颈内－后交通动脉分叉部动脉瘤的形成具有相关性，比值越小越有可能形成动脉瘤。
목적：통과회고성채집로내동맥분차부적혈관형태궤하삼수，분석혈관결구여동맥류발생적상관성，위후기전첨성연구제공이론의거。방법통과회고학진로내동맥류적병례자료，득도가이진행경내－후교통동맥분차부분차각、경내동맥화후교통동맥직경측량적경내－후교통동맥분차부동맥류공14례위연구조，비경내－후교통동맥분차부동맥류공15례위대조조。분별측량량조적경내－후교통동맥분차부분차각（Ap），후교통동맥직경（Dp），경내동맥 C6단（DC6）여 C7단직경（DC7），통계분석경내－후교통동맥분차부혈관형태궤하삼수여동맥류발생적상관성。결과연구조경내－후교통동맥분차부분차각명현소우대조조（P＜0.01）。근거분차각진행분층，대분차각재84°지120°적병례，진행경내－후교통동맥분차부혈관직경적제이차통계분석，결과현시연구조적후교통동맥직경명현소우대조조（P ＜0.05）；연구조후교통동맥여 C6단직경비치명현소우대조조（P＜0.05）。결론경내－후교통동맥분차부분차각적대소여경내－후교통동맥분차부동맥류적형성상관，분차각월소월유가능형성동맥류；이재일정분차각범위내，후교통동맥여경내동맥직경적비치여경내－후교통동맥분차부동맥류적형성구유상관성，비치월소월유가능형성동맥류。
Objective Retrospective collecting morphology geometrical parameters of blood vessels of bifurcations ,intracranial artery , analyzing the relationship between geometry of artery and the incidence of aneurysm to provide the theoretical basis for prospective study later .Methods 14 patients who have PcomA aneurysms (cases) and those of 15 patients with aneurysms at other sites (AcomA or MCA e .g .) (controls) were selected .Then the diameters of C6 (DC6 ) ,C7 (DC7 ) and PcomA (Dp) at 5mm away from the crotch of the Pco-mA bifurcation and the PcomA bifurcation angle (Ap)were measured .Then compare the data by using Student t test .Results We ana-lyzed the diameters and the angels of the bifurcation of PcomA ,The mean angles of the PcomA bifurcation were 88 .93°± 19 .63° in the 14 cases and 113 .27°± 13 .73° in the 15 controls (P< 0 .01) .Then the data was ranked by the bifurcation angle ,and the data range from 84° to 120° 16 patients in all for diameters comparison .The mean of diameters of the PcomA was (1 .42 ± 0 .23)mm in the 7 cases and (1 .87 ± 0 .42)mm in the 9 controls (P< 0 .05) ,and the mean of ratio (Dp/DC6 ) was (0 .46 ± 0 .11) in the 7 cases and (0 .59 ± 0 .09) in the 9 controls (P< 0 .05) .Conclusions Sharper bifurcation angles are risk factors associated with the presence of aneurysms at PcomA bifurcation .And in a certain range of angle ,84° to 120° in the study ,larger diameter of outlet vessel would be a protective factor to prevent the presence of intracranial aneurysm at PcomA bifurcation .