Scatter corrections for detector pixels for a middle column (16 of 32) and the lower half of the rows as a function of angle index for the (a) 16x16x16 voxel
example and (b) 64x64x64 voxel
Step 4: Construct a Hessian matrix, compute the three eigenvalues [[lambda].sub.1], [[lambda].sub.2], and [[lambda].sub.3], and use formulas (15) and (17) to calculate the nodule enhancement function [E.sub.ball] and the vessel enhancement function [E.sub.line], respectively, of each voxel
[a.sub.7] are constants, which are uniquely determined by the values of the eight vertices in the voxel
. According to Equation (9) we can obtain the property value of any point inside the voxel
Currently, there are 19 different brands of these devices in the market whose FOV size varies between 7x12 and 14x24 cm, and the voxel
size varies between 0.07 and 0.40 mm (13).
Porosity was then calculated based on the relationship between total volume of voids ([greater than or equal to] voxel
) and the volume of the reconstructed subvolume of the sample, according to Eq.
From these voxel
intensities values, assuming that the number of voxels
differed for each region each subject dataset S, which included 10 ROIs, can be defined as follows:
where [p.sub.i] represents the adjacent voxel
in the region space of voxel
p and n is the number of voxels
Settings were 100 kVp, 100 mA, and 0.5 mm Al/Cu filter; voxel
sizes of 5.2, 8.1, 11.2, or 16.73 [micro]m; and 0.5 step rotation.
The independent components (ICs) output from FLICA contained three types of information: IC values, spatial information, and voxel
values (see Table 2).
Corrections for multiple comparisons were conducted using the theory of Gaussian random fields (GRF) as the preprocessed images were spatially smoothed and voxels
were correlated with their neighbors.
The second derivatives, in each direction around a voxel
in an ultrasound volume, provide information about the type of geometric shape to which the voxel
A novel measure called voxel-mirrored homotopic connectivity (VMHC) reflects the resting-state functional synchrony between each voxel
in one hemisphere and its opposite counterpart in the mirrored hemisphere [24, 25].