Figure 26:MR spectroscopy of infarction (vascular NBD).
A. A coronal T2-weighted SE MR image shows location of the spectroscopy voxel in the right hemispheric lesion.
B. MRS (TE: 222 ms) reveals lactate (arrow) at 1.32 ppm; severe reduction of NAA peak at 2 ppm (arrowhead) is also noted.
C. MRS (TE: 135 ms) shows inversion of the lactate peak (arrow) and redocuments reduction of NAA peak. Ppm: parts per million; NAA: N-acetyl aspartate.