Ch 16: Dynamic Range Flashcards Preview

Ultrasound Physics > Ch 16: Dynamic Range > Flashcards

Flashcards in Ch 16: Dynamic Range Deck (12)
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1
Q

This is a method of describing the extent to which a signal can vary and still maintain accuracy.

A

dynamic range

2
Q

Dynamic range is reported in units of…

A

decibels (dB).

3
Q

As a general rule, the dynamic range of information __ the more it is processed.

A

decreases

4
Q

This is a technique that reduces the dynamic range of a signal without introducing errors.

A

compression

5
Q

In compression, the largest signal ends as the…

A

largest.

6
Q

In compression, the smallest signal ends as the…

A

smallest.

7
Q

In compression, the range of signals is…

A

reduced.

8
Q

The dynamic range of a display can be reported as the number of __ gray shades.

A

possible

9
Q

Narrow dynamic range means __ gray shades.

A

fewer

10
Q

Images that display few shades of gray are called…

A

high contrast.

11
Q

Wide dynamic range means __ gray shades.

A

many

12
Q

Images that display many shades of gray are called…

A

low contrast.