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tomography

tomography The use of X-rays to photograph a selected plane of a human body with other planes eliminated. The CT (computerized tomography) scanner is a ring-shaped X-ray machine that rotates through 180° around the horizontal patient, making numerous X-ray measurements every few degrees. The vast amount of information acquired is built into a three-dimensional image of the tissues under examination by the scanner's own computer. The patient is exposed to a dose of X-rays only some 20% of that used in a normal diagnostic X-ray.

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"tomography." A Dictionary of Biology. . Encyclopedia.com. 20 Oct. 2017 <http://www.encyclopedia.com>.

"tomography." A Dictionary of Biology. . Encyclopedia.com. (October 20, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/tomography-0

"tomography." A Dictionary of Biology. . Retrieved October 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/tomography-0

tomography

tomography (tŏ-mog-răfi) n. the technique of rotating a radiation detector around the patient so that the image obtained gives additional three-dimensional information. In plain film tomography this produces an image of structures at a particular depth within the body, bringing them into sharp focus, while deliberately blurring structures above and below them. The visual record of this technique is called a tomogram. See also computerized tomography, positron emission tomography, SPECT scanning.

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"tomography." A Dictionary of Nursing. . Encyclopedia.com. 20 Oct. 2017 <http://www.encyclopedia.com>.

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tomography

to·mog·ra·phy / təˈmägrəfē/ • n. a technique for displaying a representation of a cross section through a human body or other solid object using X-rays or ultrasound. DERIVATIVES: to·mo·graph·ic / ˌtōməˈgrafik/ adj.

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"tomography." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 20 Oct. 2017 <http://www.encyclopedia.com>.

"tomography." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (October 20, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/tomography

"tomography." The Oxford Pocket Dictionary of Current English. . Retrieved October 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/tomography

tomography

tomography Any technique by which details of a subsurface plane can be represented graphically. See SEISMIC TOMOGRAPHY.

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"tomography." A Dictionary of Earth Sciences. . Encyclopedia.com. 20 Oct. 2017 <http://www.encyclopedia.com>.

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"tomography." A Dictionary of Earth Sciences. . Retrieved October 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/tomography

tomography

tomography Technique of X-ray photography in which details of only a single slice or plane of body tissue are shown.

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"tomography." World Encyclopedia. . Encyclopedia.com. 20 Oct. 2017 <http://www.encyclopedia.com>.

"tomography." World Encyclopedia. . Encyclopedia.com. (October 20, 2017). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/tomography

"tomography." World Encyclopedia. . Retrieved October 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/tomography