Table 2.

Imaging data

Imaging parameters		PD	Controls	PFDR corrected	Partial eta squared
DTBZ DVR	Putamen	1.768(0.261)	3.545(0.327)	<0.001*	0.890
	Caudate	2.071(0.310)	2.697(0.256)	<0.001*	0.474
Free Water	pSN	0.182(0.061)	0.162(0.041)	0.040*	0.035
	aSN	0.159(0.047)	0.146(0.042)	0.528	0.003
	Putamen	0.171(0.079)	0.170(0.075)	0.528	0.002
	Caudate	0.252(0.109)	0.258(0.099)	0.528	0.002
	Globus pallidus	0.204(0.111)	0.182(0.075)	0.477	0.008
FAT	pSN	0.565(0.043)	0.558(0.037)	0.702	0.002
	aSN	0.512(0.046)	0.511(0.039)	0.702	0.001
	Putamen	0.209(0.055)	0.190(0.034)	0.268	0.013
	Caudate	0.248(0.043)	0.242(0.032)	0.702	0.001
	Globus pallidus	0.333(0.061)	0.313(0.032)	0.268	0.017

Abbreviation: DTBZ DVR = [¹¹C]dihydrotetrabenazine distribution volume ratio; FA_T = free-water corrected fractional anisotropy; pSN = posterior substantia nigra; aSN = anterior substantia nigra.

^*statistically significant difference.

Data were presented as mean (SD).