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RADT Unit 3 > Computed Radiography > Flashcards

Computed Radiography Flashcards

1
Q

Computed Radiography (CR)

A

Is the generic term applied to an imaging system comprised of:
- PSP screen
- CR reader
- Digital Electronics

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2
Q

Photostimulable Storage Phosphor (PSP) screen

A

To acquire the x-ray projection (aerial) image

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3
Q

CR Reader

A

To extract the electronic latent image

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4
Q

Digital Electronics

A

To convert the analog signals to digital form

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5
Q

Screen film Imaging vs Computed Radiography (CR) How are they similar?

A

Both
- Use x-ray sensitive image receptor (incased in protective cassette)
- Used interchangeably with x-ray imaging system
- Carry latent image that must be made visible by processing

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6
Q

Screen film Imaging vs Computed Radiography (CR)
How are they different?

A
  • Differ in processing
  • screen-film
  • CR
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7
Q

Screen-film

A

Image manifested through chemical processing

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8
Q

CR

A

analog image converted into digital signal

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9
Q

Screen- Film steps

A
  • X-ray beam
  • Patient
  • Aerial Image
  • Intensifying screen (emits light)
  • Film (latent image)
  • Chemical processing
  • Manifest image
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RADT Unit 3 (4 decks)

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