Article Figures & Data
Figures
- Fig 1.
Localization of the artery of Adamkiewicz in a patient with aortic thrombus. MR angiography shows the thrombus in the abdominal aorta below the renal arteries (arrows, A). No ischemia is visible in the conus medullaris (B). The artery of Adamkiewicz is permeable (arrows, C).
- Fig 2.
Ischemia provoked by an atheroma. Note the important atheromatosis of the abdominal aorta nicely shown by the volume-rendering reconstruction of CT angiography (A). Ischemia of the conus medullaris shown by MR imaging is hyperintense on T2 with a restriction of diffusion (arrows, B–E).
- Fig 3.
Evolution of ischemia. The first MR image shows the subtle signal anomaly on T2 and diffusion sequences (arrows, A–C). Follow-up 48 hours later shows an important tumefaction and high signal on T2WI associated with a restriction of diffusion of the cervical spinal cord at the C4–C7 levels (arrows, D–G).
- Fig 4.
Venous infarction in a patient with epidural and paraspinal abscesses. Note large intramedullary high signal on T2 of the cervical spinal cord (A). T1WI with contrast medium demonstrates an intramedullary enhancement (B and C), the anterior (arrows, B) and posterior epidural (white arrowhead, B), and paraspinal abscesses (black arrowhead, B). Note enhancement on axial T1 of both sides of the median line, reflecting venous ischemia.
- Fig 5.
Cervical spinal canal stenosis and venous infarction. Note the cervical spinal canal stenosis from C4 to C6 due to cervical spondylosis (asterisks, A) and the intramedullary high signal on T2WI (arrow, B) at the same level with the “snake eye” appearance on axial T2WI (arrows, C).
- Fig 6.
Subacute ischemia. Note the slight hypersignal of the spinal anterior territory at the level of C4–C6 on T2WI (arrows, A and E), associated with a restriction of diffusion (arrows, C and D) and enhancement (arrows, D).
Tables
Sequences TR (ms) TE (ms) Section Thickness (mm) B0 SE T1 670 10 3 SE T2 4000 128 3 STIR 5860 108 3 Axial GE T2 450 17 3 Axial SE T2 4000 124 3 Diffusion 2600 68 3 b=500–700 DTI 2600 73 2 b=500–800, 20–25 directions Note:—SE indicates spin-echo; GE, gradient-echo.
Sequences TR (ms) TE (ms) Section Thickness (mm) B0 SE T1 590 10 3 SE T2 3270 71 3 STIR 3000 38 3 Axial GE T2 590 24 3 Axial SE T2 4640 79 3 Diffusion 6000 67 3 b=500–700 DTI 3200 67 3 b=500–800, 20–25 directions Note:—SE indicates spin-echo; GE, gradient-echo.
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