Three-Dimensional Reconstruction of Spinal Dural Sac



Fig. 22.1
(a–c) The dural sac (DS) appears on T1-weighted MR images as a dark structure that occupies the central region of the vertebral canal. (d–f) In contrast, T2-weighted images allow visualization of its contents: hyperintense cerebrospinal fluid (CSF) and hypointense nerve roots of the cauda equina (CEQ). In (c, f) the 3D model of the dural sac has been made partially transparent. L3—L3 vertebra, L4—L4 vertebra, L5—L5 vertebra



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Fig. 22.2
(a) Axial section of T2-weighted image of a dural sleeve through the S1 dorsal root ganglion (arrow). The top-left image shows the cranio-caudal level of the section plane. (b) The reference point for the sagittal section passes approximately through the center of the dural sac (arrow) 3D reconstruction of dorsal root ganglion


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Fig. 22.3
(a) Axial section of T2-weighted image of a dural sleeve through the L5 dorsal root ganglion (arrow). The image at the top shows the cranio-caudal level of the section plane, located at the L5/S1 intervertebral foramen. (b) The reference point for the sagittal section passes approximately through the center of the dural sac (arrow) 3D reconstruction of dorsal root ganglion


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Fig. 22.4
(a) Axial section of T2-weighted image of a dural sleeve through the L4 dorsal root ganglion (arrow). The top image shows the cranio-caudal level of the section plane, located at the L4/L5 intervertebral foramen. (b) The reference point for the sagittal section passes approximately through the center of the dural sac (arrow) 3D reconstruction of dorsal root ganglion


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Fig. 22.5
(a) Axial section of T2-weighted image of a dural sleeve through the L3 dorsal root ganglion (arrow). The top image shows the cranio-caudal level of the section plane, located at the L3/L4 intervertebral foramen. (b) The reference point for the sagittal section passes approximately through the center of the dural sac (arrow) 3D reconstruction of dorsal root ganglion

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Sep 18, 2016 | Posted by in ANESTHESIA | Comments Off on Three-Dimensional Reconstruction of Spinal Dural Sac

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