voxel


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voxel

 [vok´sel]
a volume element; the region in a tissue slice that corresponds to a pixel (picture element) in an image. See also computed tomography.

vox·el

(vok'sel),
A contraction for volume element, which is the basic unit of CT or MR reconstruction; represented as a pixel in the display of the CT or MR image.

voxel

An MRI term for the element of the three-dimensional space that corresponds to a pixel for a given slice thickness.

vox·el

(vok'sel)
A contraction for volume element, which is the basic unit of CT or MR reconstruction; represented as a pixel in the display of the CT or MR image.
References in periodicals archive ?
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 example.
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 respectively.
[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 in [OMEGA].
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 belongs.
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].