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A quantitative study of cranial cavity area on mid-sagittal MR images from normal adults
LIU Xia ZHAO Ji-ping DUAN Chong-feng LI Yang SUI Qing-lan*
Acta Anatomica Sinica ›› 2015, Vol. 46 ›› Issue (4) : 538-542.
A quantitative study of cranial cavity area on mid-sagittal MR images from normal adults
Objective To measure the area of the cranial cavity on mid-sagittal magnetic resonance images (MRI) from normal adults, to determine its normal range and to investigate the correlation between the area and age, and its gender difference. Methods A total of 720 normal adults (without diseases associated with the head) were selected stochastically from the PACS of our hospital. The subjects were divided into 6 age groups: 20-29, 30-39, 40-49, 50-59, 60-69, and 70-79 years old. There were 120 subjects per age group with 60 males and 60 females. The areas of the supratentorial, subtentorial, whole cranial cavity and the supratentorial to the subtentorial cranial area ratio of the participant on mid-sagittal MRI were measured. The results were statistically analyzed. Results A slightly positive linear correlation was observed among the areas of the supratentorial, whole cranial cavity and the supratentorial to the subtentorial cranial area ratio and the age. A slightly negative linear correlation was observed between the areas of the subtentorial cranial cavity and the age. The means of the supratentorial, subtentorial, whole cranial cavity and the supratentorial to the subtentorial cranial area ratio were significantly different in different sexes（t=11.55；t=15.69；t=14.70；t=-4.13，all P<0.01）. All the measurements was larger in men than in female except for the ratio of the supratentorial to subtentorial cranial areas. Conclusion The reference ranges of all participants in normal adults on mid-sagittal MRI are regular, which can be used in clinic to evaluate the cranial cavity as one indicator.
Cranial cavity area / Magnetic resonance imaging / Adult human
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