Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

SON111 Writing Assignments > Kreamkau Chapter 3 - Key Terms > Flashcards

Kreamkau Chapter 3 - Key Terms Flashcards

1
Q

Aperature

A

size of a transducer element (for a single-element transducer) or group of elements.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Apodization

A

nonuniform driving of elements in an array to reduce grating lobes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Array

A

A transducer assembly containing serval piezoelectric elements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Axial

A

In the direction of the transdcuer axis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Axial resoltion

A

the minimum reflector separation along the sound path that is required to produce sseparate echoes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Beam

A

region containing continuous sound wave

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Composite

A

Combo of a piezoelectric ceramic and nonpiezoelectric polymer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Convex Array

A

curved linear array

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Crystal

A

element

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Curie point

A

temp at which an element material loses its piezoelectric property

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Damping

A

material attached to the rear race of a transducer element to reduce PD

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Detail resolution

A

the ability to image fine detail and to distingush closely space reflectors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Disk

A

a thin, falt, circular object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Dynamic aperature

A

aperture that increases with increasing focal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Dynamic focusing

A

continuously variable reception focusing that follows increasing depth of the trasmited pulse as it travels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Element

A

the piezoelectric component of a transducer assembly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Elevational resolution

A

the detail resolution in the direction perpendicular in the scan plane.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Far zone

A

the region of a sound beam in which the beam diameter increases as the distance form the transducer increases.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Focal length

A

distance from a focused transducer to the center of a focal region or to the location of the spatial peak intensity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Focal region

A

Region of minimum beam diameter and area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Focal zone

A

length of the focal region

22
Q

Focus

A

the concentration of the sound beam into a smaller beam area than would exist otherwise

23
Q

Gating lobes

A

additional weaker beams of sound traveling out in directions different from the primary beam as a result of multi-element structure of transducer arrays.

24
Q

Lateral

A

perpendicular to the direction of sound travel

25
Q

Lateral resolution

A

minimum reflector separation perpendicular to the sound path that is required to produce separate echoes

26
Q

Lead zirconate titanate

A

a ceramic piezoelectric material

27
Q

Lens

A

a curved material that focuses a sound or light beam

28
Q

Linear

A

adjectival form of line

29
Q

Linear array

A

array made of rectangular elements arranged in a straight line

30
Q

Linear phased array

A

linear array operated by applying voltage pulses to all elements

31
Q

Linear sequenced array

A

linear array operated by applying voltage pulses to groups of elements

32
Q

Matching layer

A

material attached to the front face of transducer element to reduce the reflection at the transducer surface.

33
Q

Natural focus

A

the narrowing of a sound beam that occurs with an unfocused flat transducer element.

34
Q

Near zone

A

region of sound beam in which the beam diameter decreases as the distance from the transducer increases

35
Q

Operating frequencies

A

preferred frequency of operation of a transducer

36
Q

Phased array

A

an array that steers and focuses the beam electronically

37
Q

Phased linear array

A

linear sequenced array with phased focusing added

38
Q

Piezoelectricity

A

conversion of pressure to electric voltage

39
Q

Probe

A

transducer assembly

40
Q

Resolution

A

the ability to distinguish echoes in terms of space, time, or strength

41
Q

Resonance frequency

A

operating requency

42
Q

Scanhead

A

transducer assembly

43
Q

Sector

A

a geometirc figure bounded by two radii and the arc of the circle included between them

44
Q

Sensitivity

A

ability of an imaging system to detect weak echoes

45
Q

Side lobes

A

weaker beams of sound traveling out from a single element in direction different from those of the primary beam

46
Q

Sound beams

A

the region of a medium that contains virtually all of the sound produced by a transducer

47
Q

Source

A

an emitter of ultrasound - transducer

48
Q

Transducer

A

a device that converts energy from one form to another

49
Q

Transducer assembly

A

transducer elements with damping and matching materials in case

50
Q

Ultrasound transducer

A

a device that converts electric energy to ultrasound energy, and vice versa

51
Q

Vector array

A

linear sequenced array that emits pulses from different starting points and in different directions

SON111 Writing Assignments (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions