Figure 1.

Examples of the definition of the regions of interest for quantitative analysis. (A) substantia nigra (green), (B) globus pallidus (blue), putamen (yellow) and caudate (red). MTRasym(3.5 ppm) and ${\text{MTR}}_{\text{asym}}^{\text{total}}$ were measured for each region. The values of each side were recorded as separate samples.