Fig 4.

15-year-old female adolescent ejected from a car. Patient had a good outcome (GOS score = 1, normal) at 12 months after injury. Total mean metabolite ratios are 1.63 (normal) for NAA/Cr, and 1.67 for NAA/Cho, and 1.06 (increased) for Cho/Cr.

A and B, T2-weighted MR image (A) corresponding SWI (B) show hemorrhagic lesions in the body of the CC and bifrontal extra-axial collections. A with grid overlay shows the 160-mm FOV and 54 (6 × 9)-voxel volume of interest (rectangle). Boxes indicate corresponding voxels in C.

C, Spectral map from 54 voxels in the volume of interest shows a (1) spectrum from normal-appearing brain in the anterior CC with decreased NAA (2.0 ppm), (2) a spectrum with reduced metabolite signal intensity due to a small hemorrhagic lesion in the mid CC, and (3) a spectrum from parietal white matter with normal metabolite ratios.