Sequence
Acquisition plane
TR/TE, ms
NSA
Slice thickness, mm/gap%
Matrix
Voxel size, mm3
Sections per block
T1 fast field echo 3D
Axial
32/4.6
1
1.8/0
205 × 256
0.9
160
T2 fast field echo 3D
Axial
7.7/3.8
1
1.3/0
352 × 352
0.65
200
Fig. 47.1
Three-Dimensional Visualization of Spinal Cerebrospinal Fluid and Cauda Equina Nerve Roots, and Estimation of a Related Vulnerability Ratio
Unintentional Subdural and Intradural Placement of Epidural Catheters
Transmission Electron Microscopy
Structure of Nerve Lesions After “In Vitro” Punctures
Injection of Dye Inside the Paraneural Sheath of the Sciatic Nerve in the Popliteal Fossa
Macroscopic View of the Cervical Plexus and Brachial Plexus
(a), Axial sequence acquisitions are grouped into two aligned adjacent blocks of 130 mm, a caudal and a rostral MR block, extending from the lowest end of the dural sac to the lower thoracic vertebrae (T11 or T10, depending on the height of the patient). Adjacent blocks are combined in a single block. (b) A smaller volume is selected around the spine to define the limits used to crop the images. (c) In the resulting cropped volume, different volumes of interest (VOIs), corresponding to CSF, roots, and surrounding structures (vertebrae, ligaments, etc.) will be delineated using different segmentation tools
Related posts:
Three-Dimensional Visualization of Spinal Cerebrospinal Fluid and Cauda Equina Nerve Roots, and Estimation of a Related Vulnerability Ratio
Unintentional Subdural and Intradural Placement of Epidural Catheters
Transmission Electron Microscopy
Structure of Nerve Lesions After “In Vitro” Punctures
Injection of Dye Inside the Paraneural Sheath of the Sciatic Nerve in the Popliteal Fossa
Macroscopic View of the Cervical Plexus and Brachial Plexus
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