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(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.)



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.
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The tomograph has been designed to determine the thickness of unilaterally accessible concrete member and to detect cracks, inclusions, air voids, and other places which may be empty or filled with a liquid or a material differing in its density and other physical mechanical properties from the surrounding concrete.
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amp; HEIDELBERG, Germany -- Heidelberg Engineering GmbH, the leading developer of laser diagnostics for ophthalmic applications, announced today the United States Food and Drug Administration (FDA) has granted clearance for the Spectralis[TM] HRA+OCT, the world's first commercial spectral domain optical coherence tomograph (OCT) combined with laser angiography.
The subject of the tender is providing service on the device - computer Tomograph area located at the radiology department at the headquarters of the contracting entity authorized service center including supply of spare parts and regular maintenance (see more tender documentation).