Definitions, abbreviations
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Anode | positive electrode in the x-ray tube
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| Automatic collimation | positive beam limitation, the ability go the radiographic equipment to collimate automatically the x-ray beam to the same side as the IR resting in the buck tray- prevent unnecessary exposure
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| Bucky | short for potter-bucky diaphragm, moving grid used to remove scatter radiation from the remnant beam, which can cause fog on the IR
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| Cassette | light proof container holding the IR, either an image plate for CR or x-ray film and intensifying screens
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| Cathode | negative electrodes in the x-ray tube
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| Collimator | boxlike structure attached to the x-ray tube containing lead shutters that limit the x-ray beam to a specific area of the body
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| Computed Radiography (CR) | digital radiographic imaging using a cassette containing an image plate
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| DICOM | Digital imaging and communications in medicine, a standart protocol used for blending a picture archiving and communications system and various imaging modalities
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| Direct Digital Radiography (DR) | misrepresentation of the size or shape of the object recorded
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| Focal Spot | area if the anode in the x-ray tube from which x-rays emanate
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| Grid | device that is placed between the patient and the IR that absorbs scatter radiation that is exiting the body
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| HIS | Hospital information system
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| Image Receptor (IR) | any device that captures the remnant beam
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| Imaging plate (IP) | made up of a photostimulable phosphor that absorbs the photon energies exiting the patient, located inside a CR cassette
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| Intensifying Screen | mounted in the cassette singly or in pairs, screens glow with visible light when struck by radiation and expose the film contained in the cassette
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| kVp | peak kilovoltage that is applied to the x-ray tube, which determines the wavelength of the x-ray beam, its ability to penetrate the body, and the overall contrast of the image
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| mAs | milliampere seconds, the product of milliamperage and time, is the current that is passed through the x-ray tube, which is then converted to x-rays when it strikes the anode; it determines the number of x-rays produced and darkness
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| Matrix | digital image that is made up of raws and columns of data
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| PACS | picture archiving and communication system
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| Pixel | picture element, the smallest component of a matrix
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| Processor | machine that automatically develops x-ray film
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| Radiograph | x-ray image as viewed after it has been exposed and processed
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| Radiographic position | specific position of the body or part in relation to the table or IR
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| Radiographic projection | path that the x-ray beam takes as it passes through the body; anatomic position
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| Radiographic view | term used to explain how the IR sees the body image; opposite of radiographic projection
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| Remnant Beam | x-ray beam that exits the patient; made up of image forming rays and scatter radiation
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| RIS | radiology information system
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| Voxel | volume element; section of tissue represented by a pixel
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Created by:
juaire30
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