Chapter 16

Question 1

A method of reporting the extent to which a signal can vary and still be accurately measured.
• “number of available choices”

Answer 1

Dynamic range

Question 2

Units for dynamic range

Answer 2

Decibels

Question 3

Weak signals are _ the systems threshold

Answer 3

Below

Question 4

Signals that at too strong _ the system

Answer 4

Saturate

Question 5

_ keeps the signals in a range of accurate measurement.

Answer 5

Dynamic range

Question 6

Individual components of of a system have different

Answer 6

Different ranges

Question 6

Individual components of of a system have different

Answer 6

Different ranges

Question 7

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

Answer 7

Decreased

Question 8

Components _(such as _) process data with the widest dynamic range.

Answer 8

earliest in the imaging chain (transducer)

Question 9

Components _ (_) process data with narrower dynamic ranges

Answer 9

Farther along (display)

Question 9

Components _ (_) process data with narrower dynamic ranges

Answer 9

Farther along (display)

Question 10

Component: tranducer

Dynamic range:

Answer 10

120dB

Question 11

Component: transducer

Dynamic range:

Answer 11

120dB

Question 11

Component: tranducer

Dynamic range:

Answer 11

120dB

Question 12

Component: receiver

Dynamic range:

Answer 12

100-120dB

Question 12

Component: receiver

Dynamic range:

Answer 12

100-120dB

Question 13

Component: scan converter

Dynamic range:

Answer 13

40-50 dB

Question 14

Component: scan converter

Dynamic range:

Answer 14

40-50 dB

Question 15

Component: display

Dynamic range:

Answer 15

20-30dB

Question 16

Component: display

Dynamic range:

Answer 16

20-30dB

Question 17

Component: archive

Dynamic range:

Answer 17

10-30db

Question 18

_ eliminates potential errors that occur when the dynamic range of one component is narrower than that of another component

Answer 18

Compression of dynamic range

Question 18

_ eliminates potential errors that occur when the dynamic range of one component is narrower than that of another component

Answer 18

Compression of dynamic range

Question 19

Compression eliminates _ that occur when the dynamic ranges of _.

Answer 19

Potential errors

one component is narrower than that of another component

Question 20

Compression of dynamic range reduces _

Answer 20

the dynamic range of a signal without introducing errors

Question 21

Compression of dynamic range helps to _ info into _ so we can see _

Answer 21

Compress The correct shades of gray The meaningful clinical info

Question 22

``` Compression of Dynamic Range: Largest signal _ Smallest signal _ Ranges of signals _ Adjustable by _ ```

Answer 22

Remains the largest Remains the smallest Is reduced Sonographer

Question 22

``` Compression of Dynamic Range: Largest signal _ Smallest signal _ Ranges of signals _ Adjustable by _ ```

Answer 22

Remains the largest Remains the smallest Is reduced Sonographer

Question 23

Mathematics for compression uses _

Answer 23

dB

Question 24

Wide dynamic range = _ shades of gray | _ contrast

Answer 24

Many | Low

Question 24

Wide dynamic range = _ shades of gray | _ contrast

Answer 24

Many | Low

Question 25

Gray scale image= _ dynamic range

Answer 25

Widest

Question 26

Narrow dynamic range= _ gray shades | _ contrast

Answer 26

Fewer | High

Question 27

Bistable = _ dynamic range

Answer 27

Narrowest

Question 28

``` Fewer shades: _ choices Bistable or gray scale? _ dynamic range _ contrast ```

Answer 28

Few Bistable Narrow High

Question 28

``` Fewer shades: _ choices Bistable or gray scale? _ dynamic range _ contrast ```

Answer 28

Few Bistable Narrow High

Question 29

``` More shades: _ choices Bistable or gray scale? _ dynamic range _ contrast ```

Answer 29

Many Gray scale Wide Low