Brainscape's Knowledge GenomeTM

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


See full index

UTZ > Intro to UTZ PART 2 > Flashcards

Intro to UTZ PART 2 Flashcards

1
Q

The product of ACOUSTIC PRESSURE to particle VELOCITY at any point in the acoustic field.

A

ACOUSTIC IMPEDANCE

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

HIGH DENSITY SUBSTANCES = ?

A

HIGH ACOUSTIC IMPEDANCE

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

LOW DENSITY SUBSTANCES = ?

A

LOW ACOUSTIC IMPEDANCE

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

FORMULA = ACOUSTIC IMPEDANCE

A

Z = pc

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

p = ?

A

DENSITY OF MATERIAL

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

c = ?

A

SPEED OF SOUND

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

Z = ?

A

ACOUSTIC IMPEDANCE

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

RANGE OF FREQUENCIES contained w/in an UTZ pulse

A

BANDWITH

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

WIDE BANDWIDTH (2)

A

SHORTER SPATIAL PULSE LENGTH

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

WIDE BANDWIDTH (2)

A

WIDER RANGE OF FREQUENCY

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

NARROW BANDWIDTH (2)

A

LONGER SPATIAL PULSE LENGTH

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

NARROW BANDWIDTH (2)

A

NARROWER RANGE OF FREQUENCY

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

affects the UTZ image

A

FREQUENCY

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

HIGHER FREQUENCY (4)

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

HIGHER FREQUENCY (4)

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

HIGHER FREQUENCY (4)

A

3.LOWER PENETRATION

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

HIGHER FREQUENCY (4)

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

LOWER FREQUENCY (4)

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

LOWER FREQUENCY (4)

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

LOWER FREQUENCY (4)

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

LOWER FREQUENCY (4)

A
  1. LOWER ABSORPTION
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

MORE READILY SCATTERED

A

HIGHER FREQUENCY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

FOR SUPERFICIAL STRUCTURES

A

HIGHER FREQUENCY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

LESS LIKELY SCATTERED

A

LOWER FREQUENCY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

FOR DEEPER STRUCTURES

A

LOWER FREQUENCY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

2 DISTINCT UTZ BEAM PATTERN

A

NEAR FIELD

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

2 DISTINCT UTZ BEAM PATTERN

A

FAR FIELD

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

NEARFIELD AKA ____

A

FRESNEL ZONE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

A SLIGHTLY CONVERGING BEAM OUT TO A DISTANCE

A

NEARFIELD

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

ADJACENT TO THE TRANSDUCER FACE

A

NEARFIELD

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

NEARFIELD DETERMINED BY

A
  1. GEOMETRY OF THE TRANSDUCER
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

NEARFIELD DETERMINED BY

A
  1. FREQUENCY OF THE TRANSDUCER
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

LARGE TRANSDUCER SURFACE AS AN INFINITE NUMBER OF POINT SOURCES OF SOUND ENERGY WHERE EACH POINT IS CHARACTERIZED AS RADIAL EMITTER

A

HUYGEN’S PRINCIPLE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

INCREASED PHYSICAL TRANSDUCER DIAMETER = ?

A

INCREASES NEARFIELD DISTANCE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

INCREASED TRANSDUCER FREQUENCY = ?

A

INCREASES NEARFIELD DISTANCE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

THE ABILITY OF THE SYSTEM TO RESOLVE OBJECTS IN A DIRECTION L TO THE BEAM DIRECTION

A

LATERAL RESOLUTION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

LATERAL RESOLUTION: BEST AT THE ___

A

END OF THE NEARFIELD FOR A SINGLE ELEMENT TRANSDUCER

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

LATERAL RESOLUTION: POOR IN ___

A

AREAS CLOSE TO AND FAR FROM THE TRANSDUCER SURFACE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

LATERAL RESOLUTION DEPENDENT ON

A

BEAM DIAMETER

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

WHERE THE BEAM DIVERGES

A

FAR FIELD/ FRAUNHOFER ZONE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

HIGHER FREQUENCY TRANSDCER

A

LESS BEAM DIVERGENCE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

LARGE BEAM DIAMETER = ?

A

LESS BEAM DIVERGENCE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

HIGH FREQUENCY = ___ NEAR FIELD DISTANCE

A

LONGER

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

HIGH FREQUENCY = ___ FAR FIELD DIVERGENCE

A

LESS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

LOW FREQUENCY = ___ NEAR FIELD DISTANCE

A

SHORTER

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

LOW FREQUENCY = ___ FAR FIELD DIVERGENCE

A

MORE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

WIDE CRYSTAL DIAMETER = _____ NEAR FIELD DISTANCE

A

SHORTER

48
Q

WIDE CRYSTAL DIAMETER = _____ FAR FIELD DIVERGENCE

A

LESS

49
Q

NARROW CRYSTAL DIAMETER = _____ NEAR FIELD DISTANCE

A

LONGER

50
Q

NARROW CRYSTAL DIAMETER = _____ FAR FIELD DIVERGENCE

A

MORE

51
Q

THIN CRYSTAL = _____ NEAR FIELD DISTANCE

A

DECREASED

52
Q

THIN CRYSTAL = _____ FAR FIELD DIVERGENCE

A

MORE

53
Q

THICK CRYSTAL = _____ NEAR FIELD DISTANCE

A

INCREASED

54
Q

THICK CRYSTAL = _____ FAR FIELD DIVERGENCE

A

LESS

55
Q

A DEVICE WHICH CONVERTS ONE FORM OF ENERGY TO ANOTHER

A

TRANSDUCER/PROBE

56
Q

TRANSDUCER: CERAMIC ELEMENT

A

PIEZOELECTRIC CRYSTALS

57
Q

CONVERTS ELECTRICAL ENERGY TO MECHANICAL ENERGY

A

TO PRODUCE UTZ

58
Q

CONVERTS MECHANICAL ENERGY TO ELECTRICAL ENERGY

A

FOR UTZ DETECTION

59
Q

TRANSDUCER/PROBE: PURPOSE (2)

A
  1. TRANSMIT UTZ BEAM
60
Q

TRANSDUCER/PROBE: PURPOSE (2)

A
  1. RECEIVE REFLECTED ECHOES
61
Q

MAJOR COMPONENTS OF TRANSDUCER (8)

A
  1. PIEZOELECTRIC MATERIALS
62
Q

MAJOR COMPONENTS OF TRANSDUCER (8)

A
  1. MATCHING LAYER
63
Q

MAJOR COMPONENTS OF TRANSDUCER (8)

A
  1. BACKING BLOCK
64
Q

MAJOR COMPONENTS OF TRANSDUCER (8)

A
  1. ACOUSTIC ABSORBER
65
Q

MAJOR COMPONENTS OF TRANSDUCER (8)

A
  1. INSULATING COVER
66
Q

MAJOR COMPONENTS OF TRANSDUCER (8)

A
  1. TURNING COIL
67
Q

MAJOR COMPONENTS OF TRANSDUCER (8)

A
  1. SENSOR ELECTRODES
68
Q

MAJOR COMPONENTS OF TRANSDUCER (8)

A
  1. TRANSDUCER HOUSING
69
Q

FUNCTIONAL COMPONENT OF TRANSDUCER

A

PIEZOELECTRIC MATERIALS

70
Q

THICKER PIEZOELECTRIC ELEMENTS = ?

A

LOW FREQUENCY OF OSCILLATION

71
Q

THINNER PIEZOELECTRIC CRYSTALS = ?

A

HIGH FREQUENCY OF OSCILLATION

72
Q

PIEZEIN MEANS “____”

A

PRESS OR PRESSURE

73
Q

ABILITY OF A MATERIAL TO GENERATE ELECTRICAL CHARGE IN RESPONSE TO APPLIED PRESSURE

A

PIEZOELECTRIC EFFECT

74
Q

PIEZOELECTRIC EFFECT BY ___

A

JACCQUES AND PIERRE CURIE

75
Q

SANDWICH B/N THE PIEZOELECTRIC CRYSTALS AND THE PX

A

IMPEDANCE MATCHING LAYER

76
Q

IMPEDANCE MATCHING LAYER: PURPOSE (3)

A
  1. TO IMPROVE TRANSMISSION INTO THE BODY
77
Q

IMPEDANCE MATCHING LAYER: PURPOSE (3)

A
  1. PROVIDES INTERFACE B/N RAW TRANSDUCER ELEMENT AND THE TISSUE
78
Q

IMPEDANCE MATCHING LAYER: PURPOSE (3)

A
  1. MINIMIZES THE ACOUSTIC IMPEDANCE DIFFERENCES B/N THE TRANSDUCER AND THE PX
79
Q

LAYERED ON THE BACK OF PIEZOELECTRIC ELEMENT

A

DAMPING BLOCK

80
Q

DAMPING BLOCK PURPOSE (4)

A
  1. ABSORBS THE BACKWARD DIRECTED UTZ ENERGY
81
Q

DAMPING BLOCK PURPOSE (4)

A
  1. ATTENUATES THE STRAY UTZ SIGNALS FROM THE HOUSING
82
Q

DAMPING BLOCK PURPOSE (4)

A
  1. DAMPENS THE TRANSDUCER VIBRATION “RING DOWN”
83
Q

DAMPING BLOCK PURPOSE (4)

A
  1. CONTROLS THE LENGTH OF VIBRATIONS FROM THE FRONT FACE
84
Q

IMPROVES AXIAL RESOLUTION

A

DAMPING BLOCK

85
Q

DAMPING BLOCK: COMPOSITION (4)

A
  1. PLASTIC OR EPOXY RESIN
86
Q

DAMPING BLOCK: COMPOSITION (4)

A
  1. CORK
87
Q

DAMPING BLOCK: COMPOSITION (4)

A
  1. RUBBER
88
Q

DAMPING BLOCK: COMPOSITION (4)

A
  1. ARALDITE LOADED W/ TUNGSTEN POWDER
89
Q

CONTAINS ALL INDIVIDUAL COMPONENT

A

PHYSICAL HOUSING

90
Q

ACTS AS AN ELECTRICAL AND ACOUSTIC INSULATOR

A

PHYSICAL HOUSING

91
Q

REDUCE THE BEAM WIDTH OF THE TRANSDUCER

A

ACOUSTIC LENS

92
Q

IMPROVES THE IMAGE RESOLUTION

A

ACOUSTIC LENS

93
Q

DETERMINES THE LATERAL RESOLUTION

A

WIDTH OF THE BEAM

94
Q

ACOUSTIC LENS COMPOSITION (3)

A
  1. ALUMINUM
95
Q

ACOUSTIC LENS COMPOSITION (3)

A
  1. PERSPEX
96
Q

ACOUSTIC LENS COMPOSITION (3)

A
  1. POLYSTYRENE
97
Q

TRANSDUCER ARRAYS (4)

A
  1. LINEAR ARRAY
98
Q

TRANSDUCER ARRAYS (4)

A
  1. PHASED ARRAY
99
Q

TRANSDUCER ARRAYS (4)

A
  1. CURVILINEAR ARRAY
100
Q

TRANSDUCER ARRAYS (4)

A
  1. CONVEX TRANSDUCER
101
Q

FREQUENCY ABOVE 4 MHz

A

LINEAR ARRAY TRANSDUCER

102
Q

256-512 ELEMENTS

A

LINEAR ARRAY TRANSDUCER

103
Q

LINEAR ARRAY : ____ FOV

A

RECTANGULAR

104
Q

LINEAR ARRAY : ____ SCAN LINES

A

PARALLEL

105
Q

FOR VASCULAR, SMALL PARTS, MUSKOSKELETAL APPLICATIONS

A

LINEAR ARRAY

106
Q

64-128 ELEMENTS

A

PHASED ARRAY

107
Q

PHASED ARRAY : ___ FOV

A

WIDE

108
Q

PHASED ARRAY: APPLICATION (2)

A
  1. CARDIAC UTZ
109
Q

PHASED ARRAY: APPLICATION (2)

A
  1. CRANIAL UTZ
110
Q

FREQUENCY: 3.5 MHz

A

SECTOR/CURVILINEAR ARRAY

111
Q

SECTOR/CURVILINEAR ARRAY: ___ FOV

A

TRAPEZOIDAL “WIDE”

112
Q

SECTOR/ CURVILINEAR ARRAY : APPLICATION (2)

A
  1. ABDOMINAL
113
Q

SECTOR/ CURVILINEAR ARRAY : APPLICATION (2)

A
  1. OBSTETRIC SCANNING
114
Q

WIDE FAN-SHAPED

A

CONVEX TRANSDUCER

115
Q

CONVEX: USEFUL FOR ALL PARTS OF THE BODY EXCEPT ___

A

ECHOCARDIOGRAPHY

UTZ (5 decks)

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