A digital representation of a number can achieve only specific fixed values.

Postprocessing of image data occurs after the data has been stored in the scan converter.

Two digital scan converters are undergoing evaluation. System A has 1,000,000 pixels and the picture size is 100 square inches. System B has an image size of 10 square inches composed of 250,000 pixels. Which image is more likely to display very small details?

The greater the number of bits assigned to each pixel of a digital image, the greater the number of shades of gray the image has.

Which one of the following doesn’t belong in the group below?

For digital image information to be displayed on a conventional television screen, the data must be processed by a digital to analog converter

The diameter of a disc shaped, unfocused piezo electric crystal is 1 cm. what is the best estimate for the minimum lateral resolution of the ultrasound system?

Two imaging systems produce acoustic pulses; one pulse is 0.4 µsec long and the other is 0.2 µsec long. Which is most likely to provide the best temporal resolution

The lower the numerical value of the longitudinal resolution, the worse the picture.

What is a typical pulser output voltage that excites a piezoelectric crystal?