|
Fig 4. Nidus at the surface of the cord shifting the tracts (patient 5, DTI25d). A 14-year-old boy presented 4 months after he experienced a sudden paraplegia, which secondarily completely resolved (McCormick I).
A–C, MR imaging showed a nidus located close to the right surface of the thoracic cord, at the level of T8-T9. On these T2-weighted images, no hyperintensity of the cord was visualized.
D shows the anisotropy that, because of the small remaining volume of the cord at that level, cannot be determined.
E demonstrates displacement of the beam of fibers to the right without focal interruption (FT25d). Distal to the nidus, the fibers seem to be more separated compared with the proximal part, which may indicate an increased water content of the cord that is not yet visible on T2-weighted images as edema, which in fact suits the decreased FA values that were found in this area (Table 2).
|