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relationship of patient to x-ray table/image receptor. Lists specific body area in contact with device
relationship of patient to x-ray tube. Lists specific body areas in path of x-ray beam in order of closest to furthest from beam. Described as if body is in anatomical position
automatic collimation (positive beam limitation)
ability of the radiographic equipment to automatically collimate the x-ray beam to the same size as the image receptor resting in the Bucky tray. Prevents unnecessary exposure to the parts of the patient outside the area covered by the image receptor
Bucky (short for Potter-Bucky diaphragm)
a moving grid used to remove scatter radiation from the remnant beam, which can cause fog on image receptor
a light-proof container holding the image receptor. Either an imaging plate for CR or x-ray film and intensifying screens
box-like structure attached to x-ray tube containing lead shutters that limits the x-ray beam to a specific area of the body
Digital imaging and communications in medicine. A standard protocol used for blending PACS and various imaging modalities
misrepresentation of the size or shape of the object as recorded in the radiographic image
s-number or exposure index that describes the status of the exposure and diagnostic value of the digital image
device that is placed between the patient and the image receptor that absorbs scatter radiation that is exiting the body
imaging plate (IP)
device made of photostimulable phosphor that absorbs the photon energies exiting the patient (located inside a CR cassette)
mounted in cassette singly or in pairs. Glow with visible light when struck by radiation and expose film contained in cassette
peak kilovoltage applied to x-ray tube. Determines wavelength of x-ray beam, its ability to penetrate the body, and overall contrast of radiographic image
coverings worn by radiographers who are in a radiographic/fluoroscopic room with x-ray beam turned on; lead absorbs most of scatter radiation that strikes apron
milliampere-seconds; product of milliamperage and time; the current that passes through x-ray tube that's converted to x-rays when strikes anode. Determines the # of x-rays produced and consequently the overall darkness of the resulting radiograph; radiation exposure to patient is directly proportional to the ____________ used
object-to-image receptor distance (OID)
distance from the part being examined to device detecting radiation
postprocessing image enhancement
digital manipulation of a radiographic image after its acquisition by computer
term used to explain how image receptor sees the body image; opposite of radiographic projection
remnant beam (exit radiation)
x-ray beam that exits the patient; comprised of image-forming rays and scatter radiation
source-to-image receptor distance (SID)
distance from source of radiation to device that's detecting radiation
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