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S4: Radiographic Imaging > Chapter 15 Key Terms > Flashcards

Chapter 15 Key Terms Flashcards

1
Q

Collimator

A

a set of lead shutters at right angles to one another that move in opposing pairs

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2
Q

Penumbra

A

a geometric unsharpness around the periphery of the image

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3
Q

Positive beam limitation (PBL) device

A

an automatic collimator that adjusts to the size and placement of the cassette

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S4: Radiographic Imaging (31 decks)

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