X-ray production, exposure factors, and imaging equipment components tested on radiologic technology certification exams.
37 cards · basic cards · AI-written, checked twice. Edit anything.
- What is the function of the cathode in an X-ray tube?
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Produces electrons through thermionic emission from a heated filament- What material is typically used for the target (anode) in an X-ray tube?
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Tungsten, because of its high atomic number and high melting point- What is thermionic emission?
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Emission of electrons from a heated cathode filament- What is the primary source of X-rays in an X-ray tube?
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Interaction of high-speed electrons with the target material (Bremsstrahlung radiation)- What exposure factor controls the quantity of X-rays produced?
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Milliamperage (mA)- What exposure factor controls the duration of X-ray production?
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Exposure time (measured in seconds or milliseconds)- What exposure factor controls the quality (penetrating power) of X-rays?
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Kilovoltage (kVp)- How does increased exposure time affect radiographic density?
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Increases radiographic density- How does increased mA affect radiographic density?
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Increases radiographic density- How does increased kVp affect radiographic contrast?
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Decreases radiographic contrast- What is the inverse square law?
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Radiation intensity is inversely proportional to the square of the distance from the source- What does SID stand for in radiography?
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Source-to-image distance, the distance from the X-ray tube to the image receptor- What does OID stand for in radiography?
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Object-to-image distance, the distance from the anatomical part to the image receptor- How does increased OID affect magnification?
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Increases magnification of the anatomical part- What is the primary function of the X-ray collimator?
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To limit the X-ray beam size and field of exposure
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