Spinal cord geometry from individual patientsa.

aGeometries were measured from MRI images (at 1.5 Tesla) with a resolution of 1 mm.bPlacement with respect to midline.cSpinal cord center placed at the center of the elliptical shell defining the dura mater.dThe spinal cord center was twice as far from the dorsal interior surface of the dura mater as it was from the ventral interior surface of the dura mater.Spinal cord geometry from individual patientsa.

a. 几何参数由分辨率为1mm的1.5特斯拉磁共振成像（MRI）扫描图像测得。
b. 相对于中线的位置。
c. 脊髓中心位于硬脊膜（dura mater）所界定的椭圆形鞘膜的中心位置。
d. 脊髓中心至硬脊膜背侧内表面的距离为其至硬脊膜腹侧内表面距离的两倍。
个体患者的脊髓几何参数。