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Exam 6: Digital Fluoroscopy

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Question 31

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The ____________________ operation is based on subtraction of images taken at different kVs.

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Question 32

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While the X-ray tube and generator provide the appropriate X-ray beam for both fluoroscopy and ____________________, the image intensifier converts X-rays into light that is captured by the video camera.

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Question 33

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____ is the continued emission of light from the screen when the radiation beam has been turned off.

Through the years, fluoroscopy has developed into a sophisticated imaging system as new technologies have emerged to improve its imaging system characteristics.

The X-ray tube used in fluoroscopy must be capable of producing X-rays either continuously or in long series.

Which of the following changes the contrast and brightness of an image display?

In the case of ____________________ scanning, 262.5 odd lines (one TV field) are first scanned, followed by 262.5 even lines (one TV field).

What do conventional fluoroscopy imaging units use to ensure efficient production of X-rays?

_________________ of the image in conventional fluoroscopy is an important feature of the image intensifier.

In digital fluoroscopy, the display image receives the video signal from the video camera and with suitable electronics, uses the signal to create the television image.