منابع مشابه
Voxel-based morphometry--the methods.
At its simplest, voxel-based morphometry (VBM) involves a voxel-wise comparison of the local concentration of gray matter between two groups of subjects. The procedure is relatively straightforward and involves spatially normalizing high-resolution images from all the subjects in the study into the same stereotactic space. This is followed by segmenting the gray matter from the spatially normal...
متن کاملDisplay Methods for Gray-Scale, Voxel-Based Data Sets
I. Indirect Methods A. Tiling Methods B. Variations on Tiling Methods C. Indirect, Voxel-Based Methods D. Indirect, Sub voxel-Based Methods II. Direct Methods for Display of Surfaces in Binary Data A. Octree Methods B. Object-Space Methods C. Image-Space Methods III. Direct Binary Methods for Display of Surfaces in Gray-Scale Data IV. Direct Binary Methods for Display of Intensity Distributions...
متن کاملVoxel-Based Morphometry of the Human Brain: Methods and Applications
In recent years, a whole-brain unbiased objective technique, known as voxel-based morphometry (VBM), has been developed to characterise brain differences in vivo using structural magnetic resonance images. The present review provides a brief description of VBM and then focuses on exemplar applications in healthy and diseased subjects. The procedure involves normalising high-resolution structura...
متن کاملVoxel Based Object Simplification
We present a simple, robust, and practical method for object simplification for applications where gradual elimination of high frequency details is desired. This is accomplished by sampling and low-pass filtering the object into multi-resolution volume buffers and applying the marching cubes algorithm to generate a multi-resolution triangle-mesh hierarchy. Our method simplifies the genus of obj...
متن کاملVoxel-Based Morphometry
The human brain is in a state of constant change and adaptation. This may be driven either by normal developmental or aging processes or by the effects of learning, training, and new occurrences in daily life. In addition to these aforementioned changes, more systematic influences such as gender, disease, and genes affect the brain’s structure. Using magnetic resonance imaging, brain changes an...
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ژورنال
عنوان ژورنال: NeuroImage
سال: 2000
ISSN: 1053-8119
DOI: 10.1006/nimg.2000.0582