. Author manuscript; available in PMC: 2016 Jan 1.

Published in final edited form as: Magn Reson Med. 2014 Jan 29;73(1):306–311. doi: 10.1002/mrm.25109

Table 2.

In vivo pseudodiffusion calculations for the ROI-based and voxelwise methods in normal volunteers

		Low b=(0,50)	Low b=(0,10,25,50)
ROI	D_p	37.0 (9.7)	85.9 (25.1)	P < 0.001
ROI	CV	0.26	0.28
Voxelwise	Mean D_p	25.2 (6.0)	61.3 (18.3)	P < 0.001
	CV	0.11	0.10
	Median D_p	19.0 (6.6)	35.0 (13.3)	P < 0.001
	CV	0.25	0.18
	% Outliers	31.3 (7.9)	10.1 (5.5)	P < 0.001

The units of the b-values are s/mm². The units of the pseudodiffusion values are μm²/ms. Each set of low b-values was in addition to b=(100,150,200,400,800) s/mm². Standard deviations are shown in parentheses. P-values are the result of a paired two-sample t-test.

Abbreviations: D_p = pseudodiffusion, CV = coefficient of variation.