Rt 103 Chapter 1

Rt 103 Chapter 1 - Term Definition Image Receptor Device...

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Term: Image Receptor Definition: Device that receives the energy of the x-ray beam & forms the image of the body part. Term: 5 types of image receptors Definition: -cassette w/ film. -image plate (IP) -solid state detectors. -fluoroscopic screen. - portable digital Radiography Term: Define Optical density & what is it controlled by? Definition: It is the degree of blackening in the radiographic film. Also known as the brightness when it appeared on a digital display monitor. It is controlled by mAs. Milliampere-second Term: mAs Definition: Milliampere-second. It affects patient radiation dose & image noise.
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Term: Contrast & what is it controlled by? Definition: Difference in densities. Low contrast displays many levels of density. High contrast displays few density levels. It is controlled by Kilovoltage peak (kVp) Term: Long scale Definition: Low contrast images that display many levels is density Term: Short scale Definition: High contrast. Very few levels of density.
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