. Author manuscript; available in PMC: 2010 Nov 23.

Published in final edited form as: J Neurosci Methods. 2009 Jul 30;181(2):268–282. doi: 10.1016/j.jneumeth.2009.05.007

Table 1.

Calculated correlation coefficients for the center voxel's nearest neighbors under several operations.

Operation	Left Neighbor Real	Left Neighbor Imaginary	Left Neighbor Real/Imaginary	Left Neighbor Magnitude²	Right Neighbor Real	Right Neighbor Imaginary	Right Neighbor Real/Imaginary	Right Neighbor Magnitude²
None	1.3e-16	1.3e-16	4.25e-17	3.3e-17	1.3e-16	1.3e-16	4.25e-17	3.3e-17
$Uniform T_{2}^{*}$	5.6e-8	5.6e-8	3.7e-5	1.2e-8	5.6e-8	5.6e-8	3.7e-5	1.2e-8
$Varying T_{2}^{*}$	4.9e-8	4.9e-8	3.4e-5	1.6e-8	4.9e-8	4.9e-8	3.4e-5	1.2e-8
B-Gradient	5.5e-7	5.5e-7	5.8e-10	7.5e-8	5.5e-7	5.5e-7	6.0e-10	7.7e-10
Partial Fourier	3.8e-5	8.9e-5	8.0e-17	7.0e-6	3.8e-5	8.9e-5	8.0e-17	7.0e-6
Partial Fourier and $Uniform T_{2}^{*}$	5.6e-5	4.0e-3	1.3e-6	1.3e-6	5.6e-5	4.0e-3	1.3e-6	1.3e-6
Partial Fourier and $Varying T_{2}^{*}$	7.7e-5	8.6e-4	9.3e-7	2.3e-6	7.7e-5	8.7e-4	1.3e-6	2.3e-6
Gaussian Smoothing	7.3e-1	7.3e-1	1.3e-16	7.3e-1	7.3e-1	7.3e-1	1.3e-16	7.3e-1
$Varying T_{2}^{*}$ Partial Fourier and Smoothing	7.5e-1	7.5e-1	2.2e-4	7.5e-1	7.4e-1	7.4e-1	1.0e-4	7.4e-1
$Varying T_{2}^{*}$ B-Gradient and Smoothing	8.2e-1	8.2e-1	2.9e-6	7.0e-1	7.5e-1	7.5e-1	2.7e-6	5.4e-1

Operation	Top Neighbor Real	Top Neighbor Imaginary	Top Neighbor Real/Imaginary	Top Neighbor Magnitude²	Bottom Neighbor Real	Bottom Neighbor Imaginary	Bottom Neighbor Real/Imaginary	Bottom Neighbor Magnitude²
None	5.4e-15	5.4e-15	9.2e-15	1.4e-15	5.4e-15	5.4e-15	9.2e-15	1.4e-15
$Uniform T_{2}^{*}$	4.9e-1	4.9e-1	2.0e-1	3.4e-3	4.9e-1	4.9e-1	2.0e-1	2.4e-3
$Varying T_{2}^{*}$	4.9e-1	4.9e-1	1.9e-1	5.2e-3	4.9e-1	4.9e-1	1.9e-1	3.6e-3
B-Gradient	2.7e-16	6.3e-17	8.1e-15	3.6e-17	1.5e-15	6.2e-20	1.1e-14	3.9e-16
Partial Fourier	2.6e-2	5.7e-1	1.0e-5	2.9e-3	2.6e-2	5.7e-1	1.0e-5	2.9e-3
Partial Fourier and $Uniform T_{2}^{*}$	5.3e-1	2.0e-1	1.1e-3	1.2e-1	5.3e-1	2.0e-1	1.1e-3	1.2e-1
Partial Fourier and $Varying T_{2}^{*}$	5.3e-1	1.1e-1	1.3e-3	1.0e-1	5.3e-1	1.1e-1	4.4e-4	1.2e-1
Gaussian Smoothing	7.3e-1	7.3e-1	2.8e-16	7.3e-1	7.3e-1	7.3e-1	2.8e-16	7.3e-1
$Varying T_{2}^{*}$ Partial Fourier and Smoothing	3.7e-1	6.1e-1	2.2e-2	3.7e-1	3.3e-1	6.1e-1	1.1e-2	3.3e-1
$Varying T_{2}^{*}$ B-Gradient and Smoothing	5.9e-1	5.9e-1	1.4e-1	5.8e-1	5.9e-1	5.9e-9	1.4e-1	5.9e-1