Hounsfield unit

См. также в других словарях:

• Hounsfield unit — the numerical unit assigned electronically to each pixel in a computerized tomography (CT) image, according to its X ray density. The fixed points on the scale are arbitrarily assigned as 1000 for air and 0 for water. The CT image is viewed in a… …   Medical dictionary

• Hounsfield unit — the numerical unit assigned electronically to each pixel in a computerized tomography (CT) image, according to its X ray density. The fixed points on the scale are arbitrarily assigned as 1000 for air and 0 for water. The CT image is viewed in a… …   The new mediacal dictionary

• Hounsfield unit — (HU)    a unit used in medical imaging (CT or MRI scanning) to describe the amount of x ray attenuation of each voxel (volume element) in the three dimensional image. The voxels are normally represented as 12 bit binary numbers, and therefore… …   Dictionary of units of measurement

• Hounsfield Unit — Der lineare Absorptionskoeffizient μ beschreibt, wie stark monochromatische Röntgenstrahlung beim Durchdringen von Materie entlang des durchstrahlten Wegs abgeschwächt wird. Die Medizin interessiert sich im Rahmen der Computertomografie besonders …   Deutsch Wikipedia

• Hounsfield unit — Der lineare Absorptionskoeffizient μ beschreibt, wie stark monochromatische Röntgenstrahlung beim Durchdringen von Materie entlang des durchstrahlten Wegs abgeschwächt wird. Die Medizin interessiert sich im Rahmen der Computertomografie besonders …   Deutsch Wikipedia

• Hounsfield scale — The Hounsfield scale is a quantitative scale for describing radiodensity. DefinitionThe Hounsfield unit (HU) scale is a linear transformation of the original linear attenuation coefficient measurement in one in which the radiodensity of distilled …   Wikipedia

• Hounsfield-Skala — CT Aufnahme eines Kopfes. Die Graustufen repräsentieren CT Zahlen zwischen −5 und 75 HU. Kleinere CT Zahlen werden schwarz dargestellt, größere weiß. Mit der Hounsfield Skala wird in der Computertomographie (CT) die Abschwächung von… …   Deutsch Wikipedia

• unit — 1. One; a single person or thing. 2. A standard of measure, weight, or any other quality, by multiplications or fractions of which a scale or system is formed. 3. A group of persons or things considered as a whole because of mutual activities or… …   Medical dictionary

• Hounsfield — Godfrey N., British electronics engineer, *1919. Developed first practical computed tomography device, the EMI scanner; received the Nobel prize in Medicine in 1979 jointly with physicist A. M. Cormack. See H. unit, H. number …   Medical dictionary

• HU — heat unit; hemagglutinating unit; hemolytic unit; Hounsfield unit; human urine, human urinary; hydroxyurea; hyperemia unit * * * see Hounsfield unit …   Medical dictionary

• H — Abbreviation or symbol for hydrogen; hyperopia; hyperopic; horizontal; Hauch; Holzknecht unit; henry, unit of electrical inductance; the Fraunhofer line at λ 3968 due to calcium; …   Medical dictionary