Motor Improvement-Related Regional Cerebral Blood Flow Changes in Parkinson’s Disease in Response to Antiparkinsonian Drugs

Table 3

rCBF changes in response to antiparkinsonian drugs in the SN, LG, and MG and their correlation with motor improvement: a subgroup analysis.

Group	Mean rCBF change index	r
(a) SN
Total 30 patients	31.10 (SD 32.36)^†	0.37^†
Subgroups
PD-ND	39.31 (SD 36.18)^†	0.39
PD-D	21.72 (SD 24.14)^†	0.16
(b) LG
Total 30 patients	17.22 (SD 35.42)^†	0.60^†
Subgroups
PD-ND	27.08 (SD 38.92)^†	0.61^†
PD-D	5.95 (SD 26.81)	0.47
(c) MG
Total 30 patients	22.62 (SD 40.03)^†	0.54^†
Subgroups
PD-ND	25.89 (SD 42.10)^†	0.54^†
PD-D	18.88 (SD 37.17)^†	0.56^†

^†. Abbreviations for VOIs: LG, lateral geniculate body; MG, medial geniculate body; SN, substantia nigra; PD-D, PD with dementia; PD-ND, PD without dementia; rCBF, regional cerebral blood flow; SD, standard deviation; VOI, volume of interest.