Abstract：Objective To evaluate the reference ranges of atlanto-dental interval (MADI) in a large sample of adult patients on MSCT, and to analyze the relationships of these measurements with gender and age of the patients. Methods A consecutive series of 700 Chinese patients aged >18 years undergoing an upper cervical MSCT scan were divided equally into seven age groups: 18-24, 25-29, 30-39, 40-49, 50-59, 60-69, ≥70 years, respectively. Using the post-processing technique of multi-planar reformats, the midsagittal image of the atlanto-dental joint was chosen for measurement and MADI was defined as the distance intercepted from the segment line linking the center of anterior atlas tubercle with that of posterior tubercle. The correlation of MADI with age and gender was analyzed using linear regression analysis. Results The MADIs were (1.77±0.39) mm, (1.61±0.37 )mm, (1.58±0.36)mm, (1.41±0.29 )mm, (1.34±0.28)mm, (1.31±0.29)mm, and (1.06±0.47)mm in the age groups 18-24 years, 25-29 years, 30-39 years, 40-49 years, 50-59 years, 60-69 years, and older than 70 years, respectively. MADI decreased linearly with age (r=-0.511, P＜0.01). The MADI of male was (1.50±0.36)mm. The MADI of female was (1.38±0.35)mm. There was no difference between different genders(r=0.000, P＞0.05). Conclusions MADI measurements on MDCT decrease linearly with age, and these are not affected by gender in adult patients.
林令博,林立勋,韩梅,熊春梅,孔祥荣,肖连祥,王道才,刘凯. 成人寰枢正中关节间隙正常值的CT多平面重组测量[J]. 中华解剖与临床杂志, 2016, 21(3): 190-193.
Lin Lingbo, Lin Lixun, Han Mei, Xiong Chunmei, Kong Xiangrong, Xiao Lianxiang, Wang Daocai, Liu Kai. Reference ranges for atlanto-dental interval in adults on midsagittal image by multi-planar reconstruction of computed tomography. Chinese Journal of Anatomy and Clinics, 2016, 21(3): 190-193.
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2016, Vol. 21 
