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Related Flashcards
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Cards In This Set
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What is Scatter Radiation?
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Lower-energy photons that change direction after interaction with an object
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Scatter Radiation ----- film quality and ----- personnel exposure
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Decreases; increases
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Cathode?
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Negatively charged end, which electrons are boiled off of as an electron cloud
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Anode?
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Positively charged end, which receives electrons and produces x-rays
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Percentage of ultrasound beam deflected by air and bone?
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100% therefore cannont be used for image through theses substances
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Kilovoltage controls?
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Speed and energy of the electrons, greater the energy the greater the penetration
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Maximum permissible dose (MPD) for radiation exposure is?
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5 rem per year
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Digital Radiograhy Ghost images occur due to:
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The image of a previous x-ray (very high exposure) remaining on the panel
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DICOM (Digital Imaging and Communication in Medicine)
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Ability to send images electronically between two locations
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Teleradiography
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Sending images to other locations through the internet
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Decreasing motion blur requires the ----- milliamperage and the ----- exposure time setting to reach desired mAs
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Highest; shortest
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Milliamperage controls?
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Volume/ number of electrons
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Fluoroscopy?
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Study of moving objects, heart or lungs
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Uberschwinger Artifact:
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Halo around metal objects or larger tissue density differences
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PACS
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Images sent within the same facility
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