Figure 1

Comparison of the regional subcortical shape between the PD-rLID and PD-vLID groups. The results are based on an analysis of covariance, after adjusting for age, sex, disease duration, levodopa-equivalent dose increments per year, dopamine transporter availability in the posterior putamen, and intracranial volume. The cluster-based statistics-corrected statistical map (P-map) indicates the subcortical regions that showed significant inward deformation in the latter group at the vertex level (yellow to red color). PD-rLID, PD group resistant to levodopa-induced dyskinesia; PD-vLID, PD group resistant to levodopa-induced dyskinesia.