Figure 1a. Regions localized during MR spectroscopic evaluation. (a) Coronal and (b) transverse T1-weighted scout images show the position chosen for the left basal ganglia (box). A similar location was chosen for the right basal ganglia (not shown). (c) Coronal and (d) sagittal T1-weighted scout images show the position chosen for the pons (box). Parameters for a-d are repetition time, 20 msec; echo time, 5 msec; flip angle, 60°.