Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Wikipedia.
Related to tomography: Optical coherence tomography


McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(also body section roentgenography or sectional radiography), a technique of roentgenological study that is used to produce a photograph of a layer lying at a specific depth in the object under study.

Ordinary roentgenography results in the production on film of an overall image, from which it is not always possible to determine the true shape and size of a formation or the depth at which it lies. The production of a roentgenogram of a single layer is based on the movement of two of the three components (the X-ray tube, the X-ray film, and the object of study). In the most common technique, the patient is motionless, and the X-ray tube and film magazine move around him in opposite directions. The use of tomography makes possible the study of the trachea, the bronchi, and the blood vessels and the detection of infiltrates and cavities of the lungs, calculi in the kidney, gallbladder, and bile ducts, and tumors in the adrenals and urinary system. The combined use of X-ray contrast media and tomography (sectional bronchography, urography, and so on) is highly effective.


Gladysz, B. Tomografiia v klinicheskoi praktike. Warsaw, 1965. (Translated from Polish.)


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


An X-ray technique that shows a single plane (slice) of the object under examination, typically a part of the human body. See CAT scan.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
1.2 Global Preclinical Tomography System Market Size Status and Outlook (2013-2028)
1.3 Global Preclinical Tomography System Market Size Comparison by Region (2013-2028)
The author preoperatively assessed renal tumor staging using multidetector computer tomography (MDCT) and found specificity of computed tomography for capsular invasion as 85.0%, nodal disease as 82.0% and adrenal involvement as 98.0% respectively.
Catalano et al reported sensitivity, specificity, PPV, NPV and diagnostic accuracy of contrast enhanced computed tomography (CT) in detecting perinephric fat infiltration renal cell carcinoma patients was 96.0%, 93.0%, 100.0%, 93.0% and 95.0% respectively12.
Future of Optical Coherence Tomography Angiography in the Management of Glaucoma
(a) TOP: optical coherence tomography angiography (OCT-A) retina slab demonstrates reduced signal due to artifact and decreased flow signal through the retinal arterial macroaneurysm (RAM).
Role of Computed Tomography Findings for Predicting Extracorporeal Shock Wave Lithotripsy Success in Children.
Cone Beam Computed Tomography is an excellent diagnostic modality in oral implantology, which is used to assess the implant site, presence of pathological changes and foreign bodies, morphology and relation with the surrounding anatomical structures.
Optical coherence tomography enables the study of objects that are partially transparent for light from the near infrared range.
Research included observation of influence parameter geometrical magnification on measurement results obtained with usage of computed tomography. Two approaches were conducted, first one included performance of experiment on CT device Nikon X TH 225 while second approach was simulation of CT scanning process by using simulation software for radiographic testing 'aRTist' (analytical Radiographic Testing inspection simulation tool), developed by Bundesanstaltfur Materialforschung und -prufung, BAM, Germany.
Mozzo et al1 in 1998 and Arai et al2 in 1999 reported independently the use of cone beam computed tomography (CBCT), sometimes referred to as cone beam volumetric imaging (CBVI).3