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32 Cards in this Set
- Front
- Back
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radiographs are a :
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shadow of the body
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The rate of accellerated electrons is called
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KVPS
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The amount of energy heating the filament is called
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milliamperage
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The primary beam reflects off of the
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anode
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what is used to mimic where the primary beam will be?
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the collimator
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the length from the primary beam to the object of interest is called the
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focal film distance
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what protects humans from the primary beam
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absolutely nothing
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higher KVPS increases the chance for more:
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scatter radiation
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what is the proper PPE
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THYROID PROTECTOR
DOCOMETER BADGE LEAD GLOVES GOWN |
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Radiation can cause _______ty
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sterility
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units of radiation are measured in
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seiverts
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individuals can receive how much radiation per year?
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.05 five hundredths
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how often should you radiograph the lead gloves to make sure theyre working?
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every 6 months
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the order of developing radiographs with film is:
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developer, fixer, water
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Does an indirect system use the PACS system?
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YES
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what does the reader do?
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translates the energy from crystals onto a blank roll then puts it in the computer
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what does the phosphor layer do
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traps electrons
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what does the reflective layer do
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sends light forward when released by the cassette player
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what does the conductive layer do
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absorbs and reduces static electricity
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what does the barcode layer do
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matches the image information with the patients ID on the exam request
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Does a direct method of Radiography need a cassette
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NO
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what does PACS stand for ?
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picture archiving communication
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who owns the radiographs?
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the clinic, but the client can have copies
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why is there a mirror?
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to get the whole picture, it needs to reflect in all directions
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Density means
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the degree or amount of blacks on the radiograph
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What are the Density's from greatest to least
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metal, bone, water, fat, air
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What is the scale of contrast, and what controls it?
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Shades of grey, KVP controls
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what is Detail, what controls detail
what controls detail limiting _____ helps too |
the definition of the edge
collimating movement |
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what do grids do?
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absorb scatter radiation
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calipers measure in
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centimeters
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what can decrease density?
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milliamperage
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as KVP increases so does
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scale of contrast
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