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目的:测量世居高原藏汉回族健康青年人的脑桥体积,对比分析高原不同民族间、性别间的脑桥体积差异,同时为完善我国标准脑数据库提供世居高原健康青年人参考数据。方法:采用Siemens 3.0T skaya MR仪,选取世居高原藏汉回族大学生各30例,其中男15例,女15例,共90例,年龄范围(18~22)岁。所有受试者均进行三维磁化强度预备梯度回波序列T1WI进行图像采集,并对测量结果进行族别间的方差分析和性别间的t检验。结果:藏族男性脑桥容积为(16.14±0.55)cm3,藏族女性脑桥容积为(15.46±0.36)cm3;汉族男性脑桥容积为(16.24±0.46)cm3,汉族女性脑桥容积为(15.60±0.44)cm3;回族男性脑桥容积为(16.08±0.27)cm3,回族女性脑桥容积为(15.34±0.35)cm3;脑桥容积在性别间差异具有统计学意义(P<0.05);在民族间的差异无统计学意义(P>0.05)。结论:藏汉回族健康青年人的脑桥容积均为男性大于女性,分析其原因可能与性别的生理因素有关。
PURPOSE: To measure the volume of pontine in healthy Tibetan and Han nationality healthy living in the plateau, to compare and analyze the differences of pontic volume between different ethnic groups and between different sexes in the plateau, and to provide the reference data of healthy young people in the plateau for improving our standard brain database. Methods: The Siemens 3.0T skaya MR instrument was used to select 30 Tibetan and Han nationality college students living in the plateau, including 15 males and 15 females, with a total of 90 cases, ranging in age from 18 to 22 years. All subjects underwent three-dimensional magnetization pre-gradient echo sequence T1WI for image acquisition, and the results of the analysis of variance between groups and t-test between gender. Results: The pons volume of Tibetan males was (16.14 ± 0.55) cm3, that of Tibetan females was (15.46 ± 0.36) cm3, that of Han males was (16.24 ± 0.46) cm3, and that of Han females was (15.60 ± 0.44) cm3. (16.08 ± 0.27) cm3 in Hui men and (15.34 ± 0.35) cm3 in Hui women. There was significant difference in the volume of pontine between sexes (P <0.05). There was no significant difference among ethnic groups P> 0.05). Conclusion: The healthy young people in Tibetan and Han nationality have more pons than female in pontine volume, and the reason may be related to the physiological factors of sex.