Lexic.us

Definition of Computed tomography

1. Noun. A method of examining body organs by scanning them with X rays and using a computer to construct a series of cross-sectional scans along a single axis.

Definition of Computed tomography

1. Noun. A form of radiography which uses computer software to create images, or slices, at various planes of depth from images taken around a body or volume of interest. ¹

¹ Source: wiktionary.com

Medical Definition of Computed tomography

1. A special radiographic technique that uses a computer to assimilate multiple X-ray images into a 2 dimentional cross-sectional image. This can reveal many soft tissue structures not shown by conventional radiography. Scans may also be dynamic in which a movement of a dye is tracked. Cuts may be 5 or 10 mm apart or, in some instances even further apart. A special dye material may be injected into the patients vein prior to the scan to help differentiate abnormal tissue and vasculature. The machine rotates 180ø around the patients body, sending out a pencil-thin X-ray beam at 160 different points. Crystals positioned at the opposite points of the beam pick up and record the absorption rates of the varying thicknesses of tissue and bone. These data are then relayed to a computer that turns the information into a picture on a screen. Using the same dosage of radiation as that of the conventional X-ray machine, an entire slice of the body is made visible with about 100 times more clarity. The scanner was invented in 1972 by the British electronics engineer Godfrey N. Hounsfield and was in general use by 1979. Synonym: computerised axial tomography. Acronym: CT (15 Nov 1997)

Lexicographical Neighbors of Computed Tomography

Literary usage of Computed tomography

Below you will find example usage of this term as found in modern and/or classical literature:

1. Assessment of the Scientific Information for the Radiation Exposure by National Research Council (U. S.) (2005)
"... exercise arterial blood gases if not medically contraindicated • High resolution computed tomography and computed tomography-scans; chest tomography, ..."

2. Mantech Project Book, 1992 (1993)
"computed tomography (CT) images are free of this superpositioning and the ... APPROACH computed tomography technology was successfully transitioned from a ..."

3. Manufacturing Technology Program: U. S. Air Force by DIANE Publishing Company (1993)
"High Resolution 3D computed tomography (Page 106) Contract Number: F33615-93-C-5327 Update-Restarted in October 1994. JDL Subpanel: Manufacturing Systems. ..."

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