. Author manuscript; available in PMC: 2020 Jul 1.

Published in final edited form as: Parkinsonism Relat Disord. 2019 Apr 16;64:235–241. doi: 10.1016/j.parkreldis.2019.04.006

Table 2a.

Changes in Striatal VMAT2 Availability after 4–6 months of STN DBS in Parkinson's Disease (Distribution Volume Ratios [DVR's] Mean ± Standard deviations).

Region	Pre- Operative	On STN DBS	% Change
Dorsal Caudate	1.07 ± 0.44	0.86 ± .35^*	−17 ± 15
Posterior Caudate	0.77 ± 0.37	0.40 ± 0.25^**	−49 ± 22
Anterior Putamen	0.77 ± 0.13	0.71 ± 0.13	−7 ± 9
Posterior Putamen	0.54 ± 0.11	0.46 ± 0.08^**	−15 ± 7
Associative Striatum	0.90 ± 0.33	0.69 ± 0.24^*	−22 ± 11
Ventral Striatum	1.20 ± 0.31	1.08 ± 0.21	−9 ± 8

Significant within group difference (p < 0.05).

^**

Significant within group difference (p < 0.01).