Article Figures & Data
Figures
- Fig 1.
Images were obtained 2 days after the accident.
A and B, Axial fat saturated T2-weighted images (TR/TE, 5190/66) of the pelvis (A) and upper thigh (B) show increased signal intensity surrounding the gluteus and iliopsoas (A, arrowheads), quadriceps femoris, and adductor muscles (B, arrowheads).
C, Right parasagittal T2-weighted image (TR/TE, 4000/127). The right L4 nerve root is not clearly visualized within the neural foramen (arrow). Note thinning of the right L5 and S1 nerve roots in the neural foramina (arrowheads).
D, Axial T1-weighted image (TR/TE, 449/8.9) at the level of L4–5 shows decreased signal intensity of the normal epidural fat surrounding the right-sided L4 nerve root sleeve (arrow).
E, Axial T2-weighted image (TR/TE, 5430/110) at the level of L4–5 shows increased signal intensity around the right-sided nerve root sleeve (arrow).
- Fig 2.
Images were obtained 1 month after the accident.
A, Right parasagittal T2-weighted image (TR/TE, 4000/180). The right L4, L5, and S1 nerve roots are not visualized within the neural foramen (arrows).
B, Axial T2-weighted image (TR/TE, 5430/110) at the level of L4–5 shows interval development of pseudomeningoceles on the right L4 (arrow) and L5 (arrowhead).
- Fig 3.
Images were obtained 5 weeks after the accident.
A, Axial fat-saturated T2-weighted image (TR/TE, 5430/110) at the level of L4–5 shows pseudomeningoceles clearly on the right L4 (arrow) and L5 (arrowhead) nerve root sleeves, which contain no nerve root.
B and C, Coronal short-inversion-time inversion recovery images (TR/TE/TI, 6000/44/150) show the enlarged nerve root sleeves at the L2 (B, arrow) through L5 levels (C, arrows). Note increased signal intensity of the right sciatic nerve (C, arrowheads).
D, Axial fat-saturated T2-weighted image (TR/TE, 5117/55) shows an enlargement and increased signal intensity of the right sciatic nerve (arrow).
E, Intravenous gadolinium-enhanced axial fat-saturated T1-weighted image (TR/TE, 616.7/14) shows diffuse enhancement of the right sciatic nerve (arrow).
