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FIG 1. MR imaging of LS spine before treatment.
A, Midsagittal, noncontrast T1-weighted MR image reveals a long segmental hyperintense signal along the cauda equina at the lower lumbar region (arrows).
B, Axial, noncontrast T1-weighted MR image shows hyperintense signal at the same level of as that of A.
C, Midsagittal T2-weighted MR image shows hyperintense signal along cauda equina (arrow).
D, Axial noncontrast T2-weighted MR image reveals hyperintense signal of cauda equina at the same level as that of C (arrow).
E, Midsagittal postgadolinium injection T1-weighted with fat suppression MR image reveals a long segmental linear enhancement along the cauda equina at the lower lumbar region (white arrow). The conus medullaris is slightly enlarged with increase enhancement (black arrow).
F, Axial postgadolinium injection, T1-weighted MR image shows irregular hyperintense signal of cauda equina (at the level of white arrow in E).
G, Axial postgadolinium injection, T1-weighted MR image reveals irregular hyperintense signal of conus medullaris (at the level of black arrow in E).
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