CAJ | 학술논문

目的：测量双侧大脑中动脉M1分叉角度，探讨其正常值范围及与年龄和性别的相关性研究，分析脑动脉瘤形成、发展因素的相关性。方法以40例大脑中动脉动脉瘤组及195例对照组的MRA资料为研究对象，进行双侧大脑中动脉分叉角度测量，结果采用百分比法和Correlation相关性分析，统计95％可信区间以及夹角和性别、年龄及侧别的相关性。结果因为所测夹角数据呈非正态分布，故采用百分位数法计算95％正常值范围。男性左侧MCA夹角58．52～128．40°，男性右侧MCA夹角60．20～132．20°；女性左侧MCA夹角51．63～127．50°，女性右侧MCA 夹角65．38～155．38°；Correlation 相关性分析结果：双侧MCA夹角（左侧MCA 夹角56．90～128．00°；右侧MCA夹角62．00～144．00°）（ r＝0．321，p＝0．000）差异有统计学意义。秩和检验双侧MCA夹角有差异（ Z＝－2．641，P＝0．008）。 MCA夹角与年龄之间为正相关（左右侧r分别为0．248、0．210，P＜0．01）；与性别之间无相关性（左右侧r分别为0．135、0．085，P＞0．05）。动脉瘤组和对照组秩和检验显示动脉瘤组夹角和对照组夹角间有显著差异（左右侧Z值分别为-6．357、-7．452，P＜0．01），含有动脉瘤的分叉角度明显高于对照组的分叉角度。结论 MCA夹角与年龄有关，呈正相关，年龄越大，夹角有增大趋势；与性别无相关性。左侧MCA夹角大于右侧MCA夹角。动脉分叉角度对分叉部动脉瘤的检出及预测具有重要参考价值。
목적：측량쌍측대뇌중동맥M1분차각도，탐토기정상치범위급여년령화성별적상관성연구，분석뇌동맥류형성、발전인소적상관성。방법이40례대뇌중동맥동맥류조급195례대조조적MRA자료위연구대상，진행쌍측대뇌중동맥분차각도측량，결과채용백분비법화Correlation상관성분석，통계95％가신구간이급협각화성별、년령급측별적상관성。결과인위소측협각수거정비정태분포，고채용백분위수법계산95％정상치범위。남성좌측MCA협각58．52～128．40°，남성우측MCA협각60．20～132．20°；녀성좌측MCA협각51．63～127．50°，녀성우측MCA 협각65．38～155．38°；Correlation 상관성분석결과：쌍측MCA협각（좌측MCA 협각56．90～128．00°；우측MCA협각62．00～144．00°）（ r＝0．321，p＝0．000）차이유통계학의의。질화검험쌍측MCA협각유차이（ Z＝－2．641，P＝0．008）。 MCA협각여년령지간위정상관（좌우측r분별위0．248、0．210，P＜0．01）；여성별지간무상관성（좌우측r분별위0．135、0．085，P＞0．05）。동맥류조화대조조질화검험현시동맥류조협각화대조조협각간유현저차이（좌우측Z치분별위-6．357、-7．452，P＜0．01），함유동맥류적분차각도명현고우대조조적분차각도。결론 MCA협각여년령유관，정정상관，년령월대，협각유증대추세；여성별무상관성。좌측MCA협각대우우측MCA협각。동맥분차각도대분차부동맥류적검출급예측구유중요삼고개치。
ObjectiveTomeasuretheangleoftheM1birurcationofmiddlecerebralarteryandinvestigatethe correlation between its normal range , age and gender .Methods The MRA data from 40 cases with the aneurysm of MCA and 195 cases from the control group were investigated ..The bilateral bifurcation angle of middle cerebral artery was measured .The method of percentiles and the correlation analysis were used to determine the 95%confidence interval and the correlations of the angle ,gender,age and side.Results The method of percentiles was used to calculate the 95%normal ranged due to the skewed distribution of the obtained angle data .The left MCA angle was 58. 52°to 128.40°in males.The right MCA angle was 60.20°to 132.20°in males.The left MCA angle was 51.63°to 127. 50°in females.The right MCA angle was 65.38°to 155.38°in females.For the results of correlation analysis , there was significant differences between the bilateral MCA angles ( left MCA angle between 56.90°and 128.00°and right MCA angle between 62.00°and 144.00°) ( r=0.321,P=0.000) .The rank test showed that there were differences in the MCA angles at the two sides (z=2.641, p=0.008).The result of correlation analysis indicated that there was a positive correlation between the MCA angle and the age ( The left and right side of the r are respectively 0.248, 0.210,p<0.01) . There was no correlation with gender ( The left and right side of the r are respectively 0.135, 0.085,p>0.05) .As shown by the rank test results , there was significant differences between the aneurysm group and control group in angle of arterial bifurcation .( The left and right side of the r are respectively-6.457,-7.452,p<0.01) The angle is significantly higher in aneurysm containing arterial bifurcations than those in the control group .Conclusion There are positive correlations between MCA angle and age .The angle is expanding with the growing of age .There is no correlation with gender.The MCA angle at the left side is larger than that at the right .The angle of arterial bifurcation is of great value as a reference for the testing and the prediction of aneurysm.