藏族正常成人头颅正中矢状面幕上和幕下面积的磁共振成像测量

白芃; 李玮; 钟铧; 王展飞

doi:10.16098/j.issn.0529-1356.20.05.010

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解剖学报 ›› 2023, Vol. 54 ›› Issue (5) : 567-574. DOI: 10.16098/j.issn.0529-1356.20.05.010

解剖学

藏族正常成人头颅正中矢状面幕上和幕下面积的磁共振成像测量

白芃¹ 李玮²钟铧^3* 王展飞⁴

作者信息 +

Measurement of the magnetic resonance imaging of the area supratentorial and infratentorial mid-sagittal plane of the normal Tibetan adults

BAI Peng¹ LI Wei² ZHONG Hua^3* WANG Zhan-fei⁴

Author information +

文章历史 +

摘要

目的探讨藏族正常成人幕上面积、幕下面积和颅腔面积与年龄、性别的关系。方法以生活在拉萨市自愿参加的世居藏族成年人为研究对象，有效调查对象158例，年龄 20～59 岁，平均年龄（36.60±10.75）岁，其中男性64 例，女性94 例。利用西门子 MAGNETOM ESSENZA 1.5T 磁共振扫描仪，使用3D-fSPGR序列扫描，将扫描获取的图像以DICOM格式存储，导入到3D Medical医学图像处理软件，利用软件自带的工具包，对感兴趣区域进行勾画。在T1WI 正中矢状位成像上，测量幕上面积、幕下面积和颅腔面积，并计算幕下面积/幕上面积比值，幕上面积/颅腔面积比值，幕下面积/颅腔面积比值。为消除头颅大小的个体差异对脑结构的影响，本研究用同层面颅腔面积，对幕上面积和幕下面积进行校正。结果藏族男性幕上面积为（127.91±9.84）cm2，幕下面积为（33.96±3.27）cm2，颅腔面积为（161.86±10.83）cm2；藏族女性幕上面积为（118.75±8.04）cm2，幕下面积为（32.19±3.00）cm2，颅腔面积为（150.94±8.90）cm2，不同性别间幕上面积比较差异存在显著性（t=6.408，P<0.01），幕下面积比较差异存在显著性（t=3.508，P<0.01），颅腔面积比较差异存在显著性（t=6.679，P<0.01）。校正后，藏族男性幕上面积为（122.75±2.96）cm2，幕下面积为（32.66±2.96）cm2；藏族女性幕上面积为（122.23±2.85）cm2，幕下面积为（33.18±2.85）cm2，校正后不同性别幕上面积和幕下面积比较差异均无显著性（P>0.05）。藏族男性除幕下面积、颅腔面积、校正后幕上面积/颅腔面积比3个指标不同年龄组比较差异无显著性外（P>0.05），其余各指标不同年龄组比较显著均存在差异性（P<0.05）。藏族女性各测量指标不同年龄组比较差异均无显著性（P>0.05）。藏族男性与年龄成正相关的指标为实测幕上面积、幕上面积/颅腔面积比、校正后幕上面积（r=0.258、0.363、0.363， P<0.05 或P<0.01），与年龄成负相关的指标为幕下面积/幕上面积比、幕下面积/颅腔面积比、校正后幕下面积/幕上面积比、校正后幕下面积/颅腔面积比（r=-0.363、-0.363、-0.363、-0.312，P<0.05或P<0.01）；藏族女性各测量值与年龄相关性不显著（P>0.05）。结论藏族正常成年人群平均颅腔面积男性比女性大10.7%，幕上面积男性略大于女性，幕下面积男性略小于女性，校正后无性别差异。

Abstract

Objective To explore the relationship between supratentorial area (STA), posterior fossa area (PFA) and intracranial area (ICA) of normal adult Tibetans with age and gender. Methods The subjects of this study were native Tibetan adults living in Lhasa. Totally 158 sample populations were between the ages of 20 and 59 years, with an average age (36.60± 10.75) years, including 64 males and 94 females. Siemens MAGNETOM ESSENZA 1.5T magnetic resonance scanner was used to scan with 3D-fSPGR sequence, and the images obtained by scanning were stored in DICOM format and imported into 3D Medical medical image processing software, and region of interest was delineated by using the software’s own toolkit. STA, PFA and ICA were measured on T1WI mid-sagittal imaging, and the ratios of PFA/STA, STA/ICA and PFA/ICA were calculated. In order to eliminate the influence of individual differences in skull size on brain structure, this paper corrected the STA and PFA with the same level of ICA, and obtained the relativity of supratentorial area (RSTA )and relativity of posterior fossa area(RPFA). Results The STA was (127.91±9.84) cm2, PFA was (33.96±3.27) cm2, and ICA was (161.86±10.83) cm2 in Tibetan men. The STA was (118.75±8.04) cm2, PFA was (32.19±3.00) cm2, and ICA was (150.94±8.90) cm2 in Tibetan women. There were significant differences in STA (t=6.408, P<0.01), PFA (t=3.508, P<0.01) and ICA (t=6.679, P<0.01). The RSTA was (122.75±2.96) cm2 and RPFA was (32.66±2.96) cm2 in Tibetan men.The RSTA was (122.23±2.85) cm2 and RPFA was (33.18±2.85) cm2 in Tibetan women. There was no significant difference in RSTA and RPFA between different genders (P>0.05). In Tibetan men, there were no significant differences in PFA, ICA, and RSTA/ICA (P>0.05), and there were significant differences in different age groups in the other indicators( P<0.05). There were no significant differences in the different age groups of Tibetan women (P>0.05). The indicators positively correlated with age in Tibetan men were STA, STA/ICA, RSTA (r=0.258, 0.363, 0.363. P<0.05 or P<0.01), and the indicators negatively correlated with age were PFA/STA, PFA/ICA, RPFA/RSTA, RPFA/ICA (r=-0.363, -0.363, -0.363, - 0.312. P<0.05 or P<0.01). The correlation between the measured values and age of Tibetan women was not significant (P>0.05). Conclusion The average ICA of normal adult Tibetans is 10.7% larger in men than women. The men STA is slightly larger than that of women, while the men PFA is slightly smaller than that of women. After correction, there is no significant difference between the gender.

导出引用

白芃李玮钟铧王展飞. 藏族正常成人头颅正中矢状面幕上和幕下面积的磁共振成像测量[J]. 解剖学报. 2023, 54(5): 567-574 https://doi.org/10.16098/j.issn.0529-1356.20.05.010

BAI Peng LI Wei ZHONG Hua WANG Zhan-fei.

Measurement of the magnetic resonance imaging of the area supratentorial and infratentorial mid-sagittal plane of the normal Tibetan adults

[J]. Acta Anatomica Sinica. 2023, 54(5): 567-574 https://doi.org/10.16098/j.issn.0529-1356.20.05.010

中图分类号： R322 R445.2

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