Fig. 1

Magnetic resonance imaging images from a dog presented with ambulatory tetraparesis. HNPE at C4-C5 determining mild neural compression. a Sagittal T2-W turbo spin echo (TSE) sequence where the hydrated material shows T2 signal similar to the CSF; the arrows indicate the point at which the longitudinal ligament rises from the floor of the spinal canal. b Sagittal T2-W fluid attenuated inversion recovery (FLAIR) sequence; the arrows indicate the hyperintense, poorly defined region at the spinal cord segment corresponding to the HNPE. c Fluid-only thick slab sagittal scan; the arrows indicate the area of reduced CSF signal corresponding to the spinal cord compression. d Transverse T2-W TSE sequence; the arrows indicate the compressive material