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Encyclopedia: Computed tomography

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Computed tomography (CT), originally known as computed axial tomography (CAT or CT scan) and body section roentgenography, is a medical imaging method employing tomography where digital geometry processing is used to generate a three-dimensional image of the internals of an object from a large series of two-dimensional X-ray images taken around a single axis of rotation. The word "tomography" is derived from the Greek tomos (slice) and graphein (to write). CT produces a volume of data which can be manipulated, through a process known as windowing, in order to demonstrate various structures based on their ability to block the X-ray beam. Although historically (see below) the images generated were in the axial or transverse plane (orthogonal to the long axis of the body), modern scanners allow this volume of data to be reformatted in various planes or even as volumetric (3D) representations of structures.

Translations

How to say "Computed tomography" in other languages:

	(Chinese)	X射线断层成像
	(Japanese)	コンピュータ断層撮影
	(German)	Computertomographie
	(Spanish)	Tomografía axial computarizada
	(French)	Tomodensitométrie
	(Italian)	Tomografia computerizzata

Search results

CT

CT or ct may stand for: carat ( ct ) centimes ( ct ) computed tomography (e.g. in neuroanatomy, CAT scan) Connecticut Counter-terrorism (see also: war on terrorism) c't Ceská Televize...

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Interventional radiology

interventional imaging methods include X-ray fluoroscopy, computed tomography (CT), ultrasound (US), and magnetic resonance imaging (MRI). Fluoroscopy and computed tomography have the disadvantage of...

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SPECT

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Phosphatic fossilization

microscopic three-dimensional x-ray computed tomography, a kind of micro CATscan...

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Picture archiving and communication system

imaging, positron emission tomography, computed tomography and plain X-rays. Small-scale systems that... In medical imaging, picture archiving and communication systems (PACS) are computers or networks dedicated to the storage, retrieval, distribution and presentation of images. Types of PACS Full PACS...

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Computed axial tomography

CAT apparatus in a hospital Computed axial tomography (CAT) , computer-assisted tomography , computed tomography , CT , or body section roentgenography ) is the process of using digital... word " tomography " is derived from the Greek tomos (slice) and graphia (describing). It is used in...

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Diagnostic uses of CT scanning

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Positron emission tomography

scanning include computed tomography (CT), magnetic resonance imaging (MRI) and functional magnetic resonance imaging (fMRI) and single photon emission computed tomography (SPECT). The spatial and...Positron emission tomography (PET) is a nuclear medicine medical imaging technique where...

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Brain abscess

established by a computed tomography (CT) (with contrast) examination. At the initial phase of the...

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Medical visualization

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