Comparison of MR findings of acute traumatic peripheral nerve injury and acute compressive neuropathy in a rat model
Fig 9
Illustration of fat-suppressed T2-weighted MR neurography in rats with normal sciatic nerve (A), acute crush injury (B), and acute compression injury (C) of the sciatic nerve. Normal sciatic nerve (A) shows intermediate to high signal intensity on fat-suppressed T2-weighted images. When an acute injury occurs, the injured nerve shows increased caliber and signal intensity. The injured nerve shows marked changes in acute compression injury (C) compared with acute crush injury (B). In acute compression injury (C), the injured nerve shows a long tubular structure, including both the proximal and distal portions of the injury. Denervation edema of the calf muscles (arrows) is similar in the two types of injury (arrowheads: injury site).