RAD-285 IMAGE CAPTURE

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Author:
anatomy12
ID:
294896
Filename:
RAD-285 IMAGE CAPTURE
Updated:
2015-02-05 09:16:09
Tags:
xray
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Description:
xray
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  1. what is hard copy output
    conversion of digital image to analog
  2. what does digital imaging use to convert radiation that passes through the patient directly to a digital image
    electronic detectors
  3. fill factor
    • žPercentage of
    • detector area that is   active
  4. žDark noise
    žSignal without radiation
  5. žUniformity
    • žPixel response and
    • readout, receptor   response, tiling
  6. what is a soft copy
    sent as a file on a disk
  7. what is a mask image
    • is simply a positive image of
    • the same area prior to contrast administration.
  8. Digital
    Subtraction Angiography
    • is the procedure to visualize blood
    • vessels with contrast medium in a bony environment by subtracting the
    • pre-contrast image (the
    • mask) from the image with contrast medium.
  9. what is the purpose of digital subtraction of angiographic images
    • žis to demonstrate the vessels free of
    • superimposed, disturbing image noise.
  10. how can DSA be performed
    žthru an artery (intra-arterial)or thru a vein(intravenous) via a catheter insertion
  11. how many fps is pulsed fluoro (serial imaging) and continuous fluoro (dynamic scan)
    • 1-8fps
    • 30fps
  12. DSA is a ____ resolution procedure
    what focal spot does it use
    • low
    • large
  13. what is electric noise
    • žSignal
    • subtracted out from raw image, but contributes to total system noise
  14. spatial resolution is related to _____
    pixel size

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