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Exam 6: Digital Fluoroscopy

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Question 31

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The ____ changes the image contrast and the ____ changes the brightness of the image.

A) WW; WL
B) WL; WW
C) DSA; WL
D) DSA; WW

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Question 32

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In digital fluoroscopy, the ADC receives the output video signal (analog signal)from the video camera.

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Question 33

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Which of the following ensures that the X-ray beam is pulsed rather than being produced continuously?

The image at the output screen of the image intensifier tube is far too small and too bright to be observed directly by a(n)____________________.

In 1983, the ____________________ replaced the TV camera tube in digital fluoroscopy.

The spatial resolution for a digital fluoroscopic image depends on ____.

Since the input screen is convex with respect to the X-ray tube, the spatial resolution is much better at the center of the input screen compared to ____.

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.

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

Recently, 43 cm x 43 cm dynamic FPD has become available for digital fluoroscopy; however, it is still not available for digital radiography.