Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. the three-dimensional analogue of a pixel; a volume element representing some numerical quantity, such as the colour, of a point in three-dimensional space, used in the visualisation and analysis of three-dimensional (especially scientific and medical) data

Etymologies

Blend of volumetric and pixel (Wiktionary)

Examples

  • The smallest brain area called a voxel that fMRI can measure is usually a 3mm to 5mm three-dimensional volume.

    Choke

  • The researchers used a technique called voxel-based morphometry (VBM) to classify areas of brain tissue in their MRI images as grey matter, white matter, or cerebro-spinal fluid, and to compare the volume of each tissue at different stages of learning.

    Medgadget

  • Using a specialized technique called voxel-based morphometry, Ellemarije Altena and Ysbrand van der Werf from the research group of Eus van Someren evaluated the brain volumes of persons with chronic insomnia who were otherwise psychiatrically healthy, and compared them to healthy persons without sleep problems.

    PhysOrg.com - latest science and technology news stories

  • Essentially, brain scanners digitally divide the scanned area into a block of tiny boxes and each one of these is called a voxel (think 3D pixel).

    ScienceBlogs Channel : Life Science

  • The smallest single unit measured by BOLD fMRI, called a voxel, is often a few millimeters on each side, dwarfing the size of individual neurons.

    Signs of the Times

  • A single three dimensional "voxel" in an fMRI scan lumps together the actions of tens or even hundreds of thousands of neurons - yielding a kind of rough geography of the brain

    Integral Options Cafe

  • Bruce Dell, the Australian hobbyist behind the project, suggests the voxel-based system allows basic computers to quickly render scenes.

    April 23rd, 2010

  • Reproducibility of single - and multi-voxel (1) H MRS measurements of intramyocellular lipid in overweight and lean subjects under conditions of controlled dietary calorie and fat intake.

    Election Central | Talking Points Memo | Bill Clinton: I Opposed Iraq War From The Beginning

  • Looks like the fire and water ones (not viscoeslastic) seem to be based on a volumetric voxel model which could feasibly be done in video games in the next gen or two of technology (but not nearly as accurately, but reasonably).

    EXTRALIFE – By Scott Johnson - Amazing game physics movies you might have missed

  • * But enough of that -- myself, mollpeartree, kaynorr, gracefuleigh, voxel, heathey, gnosticpi, and jovianconsensus all went to see 300 on IMAX over St. Patrick's Day weekend see, it's not just the column that suffers, it's my LJ updates.

    Kenneth Hite's Journal

Comments

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  • Also, a 3-dimensional pixel "volumetric pixel"

    February 7, 2010

  • from Physics of the Impossible by Michio Kaku, 2008, p. 81:
    "The smallest chunk of the brain that can be reliably analyzed by an fMRI machine is called a 'voxel.' But each voxel corresponds to several million neurons, so the sensitivity of an fMRI machine is not good enough to isolate individual thoughts."

    February 7, 2010