Value of multi-slice CT in measurement of cervico-occipital bone diameter before and after surgery for#br#
basilar invagination with atlantoaxial dislocation
DAI Wei-ying, TIAN Chao, YANG Tian-hao, REN Tao
Department of Radiology, Huan Hu Hospital, Tianjin 300350, China
Abstract:Objective: To explore the value of MSCT in evaluating the surgical effect of adult basilar invagination with atlantoaxial dislocation. Methods: Thirty-seven patients with basilar invagination and atlantoaxial dislocation underwent imaging examination before and after operation. MSCT three-dimensional reconstructed images were analyzed. According to the presence or absence of syringomyelia(SM), the patients were divided into two groups(group A without SM, group B with SM). The data of basion-dens interval(BDI), atlanto-dental interval(ADI), space available for the spinal cord(SAC), clivus-canal angle(CCA), highly index(HI), and chamberlain line(CBL) of the occipitocervical were obtained by craniometry. The differences of these parameters before and after operation were compared, and the correlation between these parameters and the clinical effect were analyzed. Results: In group A, the BDI, ADI, SAC, CCA, HI and CBL before and after operation were 12.6 mm, 8.3 mm, 4.5 mm, 3.3 mm, 18.2 mm, 20.8 mm, 138.3°, 150.4°, 28.7 mm, 43.4 mm, 6.3 mm, 3.3 mm respectively, and the JOA scores were 8.87 points and 12.6 points before and after surgery, with statistical difference(P<0.05). There were 12 effective cases and 3 stable cases after surgery in group A, the JOA scores before and after operation were significantly correlated with each index(r=-0.667, -0.673, -0.771, -0.719, 0.682, 0.625, 0.595, 0.658, 0.787, 0.696, -0.647, -0.796; P<0.05). In group B, the BDI, ADI, SAC, CCA, HI and CBL before and after surgery were 12.2 mm, 8.6 mm, 5.9 mm, 3.1 mm, 16.3 mm, 17.6 mm, 136.8°, 150.2°, 32.3 mm, 41.5 mm, 8.7 mm, 4.8 mm respectively, and the JOA scores were 9.59 points and 13.59 points before and after surgery, with statistical difference(P<0.05). There were 20 effective cases and 2 stable cases after surgery in group B, and JOA scores before and after operation were significantly correlated with each index(r=-0.756, -0.728, -0.651, -0.619, 0.684, 0.672, 0.726、0.695, 0.578, 0.632, -0.748, -0.821 respectively, P<0.05). Conclusion: MSCT measurement is helpful to understand the changes of bone structure before and after operation, and can be used to judge the curative effect.
戴伟英,田 超,杨天昊,任 涛. 颅底凹陷症伴寰枢椎脱位手术前后螺旋CT对颈枕区骨性径线测量价值[J]. 中国临床医学影像杂志, 2019, 30(9): 651-655.
DAI Wei-ying, TIAN Chao, YANG Tian-hao, REN Tao. Value of multi-slice CT in measurement of cervico-occipital bone diameter before and after surgery for#br#
basilar invagination with atlantoaxial dislocation. JOURNAL OF CHINA MEDICAL IMAGING, 2019, 30(9): 651-655.