CVT 151 Chapter 15 Week 1 Displays and Image Processing

The prefix bi means

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• 2

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• 4

Bistable images are composed of ______________ shades of brightness.

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• 2

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Grayscale represents multiple levels of:

• brightness (white, light gray, medium gray, etc...)

• color (white, red, blue, etc...)

• depth

• intensity

 The numerous levels of gray shades allow the ultrasound system the ability to assign different gray shades to different:

• depth

• intensity

• echo amplitudes and differentiate biological tissue of different reflectivity

  
  

• all of the above

 _____ determines the range of brilliancies within the displayed image.

• brightness

• depth

• contrast

• all of the above

Bistable images with only 2 shades (black and white) are:

• high contrast

• low contrast

Images with many shades of gray of considered to be:

• high contrast

• low contrast

The goal of a scan converter is to:

• First create gray scale and then display it in an image

• First store the acquired reflected information (write) and then read the information to display the image on the monitor

  
  

• Convert digital signals to analog, then back to digital signals

 Digital scan converters use:

• analog technology

• brightness technology

• digital technology

• none of the above

 Scan converters translates the information from ____ format to ___ format.

• horizontal lines, parallel lines

• digital, analog

• spoke, video

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