摘要
目的:测量磁共振正中矢状位上正常成人胼胝体面积,探讨不同年龄组及不同性别间可能的差异。方法:磁共振检查286例正常成人,其中男性127例,女性159例,年龄由20岁至81岁,分为20～29岁组、30～39岁组、40～49岁组、50～59岁组、60岁以上组共5组;其中20～29岁组男25例、女26例;30～39岁组男26例、女33例;40～49岁组男33例、女50例;50～59岁组男32例、女36例;60岁以上组男11例、女14例。测量磁共振成像T1加权像正中矢状位上胼胝体面积及颅内大脑面积,进行标准化。经统计学处理研究分析。结果:286例正常成人胼胝体面积平均值为(619.01±90.61)mm2;其中男性127例面积平均值为(635.99±85.62)mm2;女性158例面积平均值为(605.37±92.46)mm2;20～29岁组、30～39岁组、40～49岁组、50～59岁组、60岁以上组各年龄组胼胝体面积平均值分别为(627.52±83.34)mm2、(622.13±123.68)mm2、(615.84±85.53)mm2、(621.34±74.32)mm2、(605.81±77.53)mm2。结论:胼胝体面积标准化平均值在20～29岁组、30～39岁组、40～49岁组之间无明显变化,在50岁后逐渐缩小,不同年龄组间无显著性差异(P<0.05)。不同性别胼胝体面积平均值女性大于男性,但无显著差异(P<0.05)。
Objective： To measure the various area of the corpus callosum in normal adults and to investigate the possible existence of difference in different age groups and sex. Methods： Magnetic resonance imaging （MRI） from 286 healthy adults （127 males, 159 females） ranging in age from 20 to 81 were studied. The patients were divided into 5 groups according to ages： 20 - 29, 30 - 39, 40 - 49, 50 - 59, 60 - . There were 25 males, 26 females in 20 - 29 group;26 males, 33 females in 30 - 39 group; 33 males, 50 females in 40 - 49 group; 32 males, 36 females in 50 - 59 group; 11 males, 14 females in 60 - 69 group. Results：The average area of 286 normal adults was 619.01 ± 90.61 nun2. The average area of 127 men was 635.99 ± 85.62 mm^2 ;The average area of 158 women was 605.37 ± 92.46 mm^2 ; The average areas of each subgroups in 20 - 29, 30 - 39, 40-49, 50 -59, 60 - , were 627.52 ± 83.34 mm^2, 622.13 ± 123.68 mm^2, 615.84 ± 85.53 mm^2, 621.34 ± 74.32 mm^2, 605.81 ± 77.53 mm^2 mspeetivdy. Conclusion： There are no marked change of average area mnong the groups of 20 - 29, 30 - 39, 40 - 49. The average area are gradually decreased after 50 - 59. There are no significant difference among all the groups （ P 〈 0.05）. The average area is larger in men titan that in women, but with no significant difference（ P 〈0.05）.
出处
《医学影像学杂志》
2009年第7期798-800,共3页
Journal of Medical Imaging
关键词
正常成人
胼胝体
磁共振成像
Normal adults
Corpus callosmn
Magnetic resonance imaging
