Figure 1. ¹H MR spectra obtained in one patient with PD with STEAM (TR = 5 s, TE = 8 ms) from three VOIs.

Processing: Reconstruction of single scan free induction decays (FIDs) from phased array data, frequency and phase correction of FID arrays, FID summation, correction for residual eddy current effects, Gaussian multiplication (σ = 0.1 s), Fourier Transform (FT), zero-order phase correction. Positions of the VOIs are shown on T₁ – weighted images for pons and putamen and on a T₂– weighted image for substantia nigra (SN). tNAA, total N-acetylaspartate; tCho, total choline; tCr, total creatine; myo-Ins, myo-inositol.