At the typical spatial resolution of MRI in human brain, approximately 60–90% voxels contain multiple fiber populations. Quantifying microstructural properties distinct populations within a voxel is therefore challenging but necessary. While progress has been made for diffusion and T1-relaxation properties, how to resolve intra-voxel T2 heterogeneity remains an open question. Here novel framewo...

To model a true three-dimensional (3D) display system, we introduced the method of voxel molding to obtain stereoscopic imaging space system. For distribution each voxel, proposed four-dimensional (4D) ... | Find, read and cite all research you need on Tech Science Press

introduction: monte carlo (mc) is the most common method for simulating virtual spect projections. it is useful for optimizing procedures, evaluating correction algorithms and more recently image reconstruction as a forward projector in iterative algorithms; however, the main drawback of mc is its long run time. we introduced a model based method considering the effect of body attenuation and i...

Given a 3D binary voxel-based digital object V , an algorithm for computing homological information for V via a polyhedral cell complex is designed. By homological information we understand not only Betti numbers, representative cycles of homology classes and homological classification of cycles but also the computation of homology numbers related additional algebraic structures defined on homo...

retest scans (MRS 2 & MRS 3) following a cognitive challenge task; B. Placement of the voxel-of-interest in the ACC; C. Examples of metabolite concentrations across three within subject scanning sessions for Cr and NAA and; D. Variation around the mean of each metabolite as a function of test-retest (yellow bars) and inter-subject (blue bars) variability. The numbers on the blue bars are the in...

There has been a considerable accumulation of usage of voxel models for internal radiation dosimetry (Xu & Eckerman, 2009 ; Zaidi & Tsui, 2009). The human voxel models of the Reference Male and Reference Female have been introduced and used to evaluate the energy deposition in organs resulting from internal radiation exposures by the International Commission on Radiological Protection (ICRP) (I...

Voxel based modeling is a very attractive way to represent complex multi-material objects. Beside artistic choices of pixel/voxel arts, representing objects as voxels allows efficient and dynamic interactions with the scene. For geometry processing purposes, many applications in material sciences, medical imaging or numerical simulation rely on regular partitioning space labeled voxels. In this...