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Study sets matching "physics chapter 9 understanding ultrasound"

30 terms
Understanding Ultrasound Physics 4th Edition: Chapter 9
What location within the beam is the d…
What is the region from the transducer…
What is the distance from the transduc…
The region starting at the focal point…
focal point
near zone (fresnel zone)
focal depth (near zone length)
far zone (fraunhofer zone)
What location within the beam is the d…
focal point
What is the region from the transducer…
near zone (fresnel zone)
58 terms
Understanding Ultrasound Physics CH.9
Transducer
Transducer: during TRANSMISSION
Transducer: during RECEPTION
How do get from ELECTRICAL energy to A…
Any device that CONVERTS from one form of ENERGY into ANOTHER
Converts ELECTRICAL energy from the system into ACOUSTIC ener…
Converts the REFLECTED sound pulse into ELECTRICITY
The PIEZOELECTRIC EFFECT
Transducer
Any device that CONVERTS from one form of ENERGY into ANOTHER
Transducer: during TRANSMISSION
Converts ELECTRICAL energy from the system into ACOUSTIC ener…
19 terms
Understanding Ultrasound Physics CH 9
Anatomy of a Sound Beam
Focus
Near zone
Focal length
1. focus... 2. near zone... 3. focal length or near zone length... 4.…
or focal point, is the location where the beam is narrowest…
near field, or Fresnel zone, the region from the transducer t…
focal depth, or near zone length, the distance fromthe transd…
Anatomy of a Sound Beam
1. focus... 2. near zone... 3. focal length or near zone length... 4.…
Focus
or focal point, is the location where the beam is narrowest…
30 terms
Understanding Ultrasound Physics 4th Edition: Chapter 9
What location within the beam is the d…
What is the region from the transducer…
What is the distance from the transduc…
The region starting at the focal point…
focal point
near zone (fresnel zone)
focal depth (near zone length)
far zone (fraunhofer zone)
What location within the beam is the d…
focal point
What is the region from the transducer…
near zone (fresnel zone)
30 terms
Understanding Ultrasound Physics 4th Edition: Chapter 9
What location within the beam is the d…
What is the region from the transducer…
What is the distance from the transduc…
The region starting at the focal point…
focal point
near zone (fresnel zone)
focal depth (near zone length)
far zone (fraunhofer zone)
What location within the beam is the d…
focal point
What is the region from the transducer…
near zone (fresnel zone)
30 terms
Understanding Ultrasound Physics 4th Edition: Chapter 9
What location within the beam is the d…
What is the region from the transducer…
What is the distance from the transduc…
The region starting at the focal point…
focal point
near zone (fresnel zone)
focal depth (near zone length)
far zone (fraunhofer zone)
What location within the beam is the d…
focal point
What is the region from the transducer…
near zone (fresnel zone)
22 terms
Understanding Ultrasound Physics - Ch 9
hourglass shape
focus
focal zone
near zone
shape of a sound beam
location where beam is narrowest
area that surrounds the focus
from the base of transducer to the focal point
hourglass shape
shape of a sound beam
focus
location where beam is narrowest
25 terms
Understanding Ultrasound Physics: chpt 9
What are the two function that an ultr…
What describes the property of certain…
Piezoelectric materials change shape w…
What is another word for peizoelectric?
transmitting and receiving
piezoelectric effect
reverse piezoelectric effect
ferroelectric
What are the two function that an ultr…
transmitting and receiving
What describes the property of certain…
piezoelectric effect
58 terms
Understanding Ultrasound Physics CH.9
Transducer
Transducer: during TRANSMISSION
Transducer: during RECEPTION
How do get from ELECTRICAL energy to A…
Any device that CONVERTS from one form of ENERGY into ANOTHER
Converts ELECTRICAL energy from the system into ACOUSTIC ener…
Converts the REFLECTED sound pulse into ELECTRICITY
The PIEZOELECTRIC EFFECT
Transducer
Any device that CONVERTS from one form of ENERGY into ANOTHER
Transducer: during TRANSMISSION
Converts ELECTRICAL energy from the system into ACOUSTIC ener…
72 terms
Ultrasound Physics - Chapter 9
Image Acquisition
steps before image acquisition
The T/R switch
Pulsers
1. Image formation is a multi-step process executed in real t…
1. The T/R switch ... 2. Pulsers ... 3.The transmit beam former ... 4.…
is designed to isolate the sensitive receiver amplification s…
generate short voltage oscillations which are directed to app…
Image Acquisition
1. Image formation is a multi-step process executed in real t…
steps before image acquisition
1. The T/R switch ... 2. Pulsers ... 3.The transmit beam former ... 4.…
Ultrasound Physics - Chapter 9
Image Acquisition
steps before image acquisition
The T/R switch
Pulsers
1. Image formation is a multi-step process executed in real t…
1. The T/R switch ... 2. Pulsers ... 3.The transmit beam former ... 4.…
is designed to isolate the sensitive receiver amplification s…
generate short voltage oscillations which are directed to app…
Image Acquisition
1. Image formation is a multi-step process executed in real t…
steps before image acquisition
1. The T/R switch ... 2. Pulsers ... 3.The transmit beam former ... 4.…
22 terms
Understanding Ultrasound Physics Chapter 2
What does Acoustic propagation propert…
What does Biologic effect mean?
How does sound travel?
Sound waves are _______ and ________ w…
Effect of the medium upon the wave
effect of wave upon the biologic tissue
in a straight line
Mechanical and longitudinal
What does Acoustic propagation propert…
Effect of the medium upon the wave
What does Biologic effect mean?
effect of wave upon the biologic tissue
49 terms
Understanding Ultrasound Physics Chapter 3
What are the seven parameters that are…
What is period?
Units of period?
What is period determined by?
period. frequency .amplitude. power .intensity .wavelength. s…
the time it takes to complete a cycle
unit of time
source
What are the seven parameters that are…
period. frequency .amplitude. power .intensity .wavelength. s…
What is period?
the time it takes to complete a cycle
44 terms
Understanding Ultrasound Physics Chapter 4
What are the 5 parameters that describ…
Can a continuous wave create an image?
Can a pulse wave create an image?
What is a pulse wave?
Pulse duration, PRP, PRF, duty factor and spatial pulse lenght
No
Yes
Collection of cycles that travel together
What are the 5 parameters that describ…
Pulse duration, PRP, PRF, duty factor and spatial pulse lenght
Can a continuous wave create an image?
No
30 terms
Understanding Ultrasound Physics Chapter 1
Two items that are not associated.
Two items that are associated or affil…
Two items that are associated such tha…
Two items are associated such that whe…
Unrelated
Related, or proportional
Directly related, or directly proportional
Inversely related, or inversely proportional
Two items that are not associated.
Unrelated
Two items that are associated or affil…
Related, or proportional
35 terms
Understanding Ultrasound Physics Chapter 2
Volume, Pressure, Density, Distance
period, frequency, amplitude, power, i…
RAREFIED
STRAIGHT LINE
What are the FOUR acoustic variables?
What are the seven acoustic parameters
stretched apart
Sound travels in a_______?
Volume, Pressure, Density, Distance
What are the FOUR acoustic variables?
period, frequency, amplitude, power, i…
What are the seven acoustic parameters
20 terms
Understanding Ultrasound Physics: chapter 2
mechanical wave
compressed
rarefied
acoustic propagation properties
molecules in the medium vibrate back and forth from a fixed p…
squeezed together
stretched apart
the effects of a medium and/or tissue on sound waves;sound ne…
mechanical wave
molecules in the medium vibrate back and forth from a fixed p…
compressed
squeezed together
26 terms
Understanding ultrasound physics chapter 11
format
A-mode, amplitude
A-mode display is created by
the X-axis of A mode represents
method of display viewing ultrasound information
appears as a series of upward spikes
as the sound pulse is emitted by the transducer, a dot moves…
depth
format
method of display viewing ultrasound information
A-mode, amplitude
appears as a series of upward spikes
46 terms
Understanding Ultrasound Physics - Chapter 10
resolution
axial resolution
units of axial resolution
related to spatial pulse length and pu…
the ability to create accurate images; the essence of diagnos…
measures the ability of a system to display two structures th…
mm or units of distance
axial resolution
resolution
the ability to create accurate images; the essence of diagnos…
axial resolution
measures the ability of a system to display two structures th…
50 terms
Understanding Ultrasound Physics Chapter 3
What are the seven parameters that are…
What is period?
Units of period?
What is period determined by?
period. frequency .amplitude. power .intensity .wavelength. s…
the time it takes to complete a cycle
unit of time
source
What are the seven parameters that are…
period. frequency .amplitude. power .intensity .wavelength. s…
What is period?
the time it takes to complete a cycle
38 terms
Understanding Ultrasound Physics Chapter 8
Transmission
Reception
Piezoelectric Effect
Reverse Piezoelectric Effect
Electrical energy from the system is converted into sound
The reflected sound pulse is converted into electricity
The property of certain materials to create a voltage when th…
Piezoelectric materials change shape when a voltage is applie…
Transmission
Electrical energy from the system is converted into sound
Reception
The reflected sound pulse is converted into electricity
Chapter 9 Ultrasound Physics
Transducer diameter and focal depth ar…
The beam from a larger diameter active…
___________________ frequency sound re…
Frequency and focal depth are ________…
Directly
Higher frequency
Higher
Directly
Transducer diameter and focal depth ar…
Directly
The beam from a larger diameter active…
Higher frequency
30 terms
Understanding Ultrasound Physics Chapter 1
Two items that are not associated.
Two items that are associated or affil…
Two items that are associated such tha…
Two items are associated such that whe…
Unrelated
Related, or proportional
Directly related, or directly proportional
Inversely related, or inversely proportional
Two items that are not associated.
Unrelated
Two items that are associated or affil…
Related, or proportional
10 terms
Understanding Ultrasound Physics Chapter 1
What is another name for horizontal ax…
What is another name for vertical axis?
Unrelated means?
Directly related means?
x- axis
y-axis
two items that are not associated
two items that are associated, one item increase the other al…
What is another name for horizontal ax…
x- axis
What is another name for vertical axis?
y-axis
45 terms
Understanding ultrasound physics chapter 12
Transductor Mecánico
Channel
Types of Array Transducers
Linear
-Cristal en forma de Disco ... -Un solo elemento activo... -Crea Im…
Combination of the active element, wire, and system electroni…
Linear, Annular, Convex
active elements are arranged in a straight line
Transductor Mecánico
-Cristal en forma de Disco ... -Un solo elemento activo... -Crea Im…
Channel
Combination of the active element, wire, and system electroni…
30 terms
Understanding Ultrasound Physics 4th Edition: Chapter 8
What are the two function that an ultr…
What describes the property of certain…
Piezoelectric materials change shape w…
What is another word for piezoelectric?
transmitting and receiving
piezoelectric effect
reverse piezoelectric effect
ferroelectric
What are the two function that an ultr…
transmitting and receiving
What describes the property of certain…
piezoelectric effect
38 terms
Understanding Ultrasound Physics Chapter 8
Transmission
Reception
Piezoelectric Effect
Reverse Piezoelectric Effect
Electrical energy from the system is converted into sound
The reflected sound pulse is converted into electricity
The property of certain materials to create a voltage when th…
Piezoelectric materials change shape when a voltage is applie…
Transmission
Electrical energy from the system is converted into sound
Reception
The reflected sound pulse is converted into electricity
12 terms
Understanding Ultrasound Physics (Chapter 2)
C. Waves carry energy from place to pl…
A. Sound waves are a series of compres…
D. Wide molecular spacing
B. Parameters
What do waves transfer from one location to another?... A. Matte…
Which of the following best describes sound waves?... A. A serie…
Which of the following terms does not belong?... A. Compression…
Variations in all of the following identify specific waves as…
C. Waves carry energy from place to pl…
What do waves transfer from one location to another?... A. Matte…
A. Sound waves are a series of compres…
Which of the following best describes sound waves?... A. A serie…
Understanding Ultrasound Physics Chapter 1
Two items that are not associated.
Two items that are associated or affil…
Two items that are associated such tha…
Two items are associated such that whe…
Unrelated
Related, or proportional
Directly related, or directly proportional
Inversely related, or inversely proportional
Two items that are not associated.
Unrelated
Two items that are associated or affil…
Related, or proportional
34 terms
Understanding Ultrasound Physics 4th Edition: Chapter 13
What is the ability of the system to c…
How is frame rate determined?
What unit is frame rate measured in?
What does "accuracy in time" (the abil…
Frame rate
Sounds speed in the medium, depth of imaging
Hertz
Temporal resolution
What is the ability of the system to c…
Frame rate
How is frame rate determined?
Sounds speed in the medium, depth of imaging
25 terms
understanding ultrasound physics ch 11
sound emitted in a-mode
reflection returns in a-mode
amplitude, brightness and motion
amplitude
dot moves at a constant speed across the display
dot is deflected upward on the screen
3 modes of display
height of the upward deflection is proportional to the ______…
sound emitted in a-mode
dot moves at a constant speed across the display
reflection returns in a-mode
dot is deflected upward on the screen
Understanding Ultrasound Physics Chapter 2
What does Acoustic propagation propert…
What does Biologic effect mean?
How does sound travel?
Sound waves are _______ and ________ w…
Effect of the medium upon the wave
effect of wave upon the biologic tissue
in a straight line
Mechanical and longitudinal
What does Acoustic propagation propert…
Effect of the medium upon the wave
What does Biologic effect mean?
effect of wave upon the biologic tissue
28 terms
Understanding Ultrasound Physics (Chapter 1)
Is cholesterol level inversely related…
Is smoking inversely related, directly…
Is years employed and days of vacation…
Is IQ and shoe size inversely related,…
Inversely related. As cholestrol levels increase, life span g…
Directly related. Generally individuals who smoke are more li…
Directly related. Length of vacation time increases with leng…
Unrelated. There is no relationship between shoe size and IQ.
Is cholesterol level inversely related…
Inversely related. As cholestrol levels increase, life span g…
Is smoking inversely related, directly…
Directly related. Generally individuals who smoke are more li…
21 terms
Understanding Ultrasound Physics 4th Edition: Chapter 15
Contrast
Brightness
Scan Converter
Analog Numbers
Determines the range of brilliance in an image
Determines the brilliance of an image
converts/translates the information from spoke (fan shaped) f…
* Real world... * Unlimited choices... * Continuous values
Contrast
Determines the range of brilliance in an image
Brightness
Determines the brilliance of an image
27 terms
Understanding Ultrasound Physics FORMULAS
P(s)
F(Hz)
I (w/cm²)
λ (mm)
1/F(Hz)
Sound Speed in PZT/ 2(PZT Thickness)
Power/ Area
C (m/s) /F (Hz)
P(s)
1/F(Hz)
F(Hz)
Sound Speed in PZT/ 2(PZT Thickness)
44 terms
Ultrasound Physics- SPI Registry Review- Chapter 9
Axial Resolution
Axial Resolution Synonyms
Axial Resolution Units of measure
Is Axial Resolution Changed By the Son…
The ability to distinguish two structures that are close to e…
Longitudinal... Axial... Range... Radial... Depth... LARRD Resolution
mm, cm... with shorter pulses, the number is smaller and the ima…
No. A new transducer is needed to change axial resolution
Axial Resolution
The ability to distinguish two structures that are close to e…
Axial Resolution Synonyms
Longitudinal... Axial... Range... Radial... Depth... LARRD Resolution
43 terms
Understanding Ultrasound Physics 4th Edition: Chapter 12
Mechanical Transducer
Channel
Types of Array Transducers
Linear
- Disc shaped ... - One active element... - Fan or sector shaped... -…
Combination of the active element, wire, and system electroni…
Linear... Annular... Convex
Active elements are arranged in a straight line
Mechanical Transducer
- Disc shaped ... - One active element... - Fan or sector shaped... -…
Channel
Combination of the active element, wire, and system electroni…
44 terms
Ultrasound Physics- SPI Registry Review- Chapter 9
Axial Resolution
Axial Resolution Synonyms
Axial Resolution Units of measure
Is Axial Resolution Changed By the Son…
The ability to distinguish two structures that are close to e…
Longitudinal... Axial... Range... Radial... Depth... LARRD Resolution
mm, cm... with shorter pulses, the number is smaller and the ima…
No. A new transducer is needed to change axial resolution
Axial Resolution
The ability to distinguish two structures that are close to e…
Axial Resolution Synonyms
Longitudinal... Axial... Range... Radial... Depth... LARRD Resolution
44 terms
Ultrasound Physics- SPI Registry Review- Chapter 9
Axial Resolution
Axial Resolution Synonyms
Axial Resolution Units of measure
Is Axial Resolution Changed By the Son…
The ability to distinguish two structures that are close to e…
Longitudinal... Axial... Range... Radial... Depth... LARRD Resolution
mm, cm... with shorter pulses, the number is smaller and the ima…
No. A new transducer is needed to change axial resolution
Axial Resolution
The ability to distinguish two structures that are close to e…
Axial Resolution Synonyms
Longitudinal... Axial... Range... Radial... Depth... LARRD Resolution
47 terms
Understanding Ultrasound Physics 4th Edition: Chapter 14
The ultrasound system is comprised of…
What is the pulser responsible for?
Low voltage=
How much power do we want?
-Transducer... -Pulser and beam former... -Receiver... -Display... -Stora…
Voltage applied to the PZT, Hits crystals,Transducer output (…
Slight element vibration and weak sound beam
Least amount possible
The ultrasound system is comprised of…
-Transducer... -Pulser and beam former... -Receiver... -Display... -Stora…
What is the pulser responsible for?
Voltage applied to the PZT, Hits crystals,Transducer output (…
9 terms
Understanding Ultrasound Physics Doppler
Non-directional Doppler/ Non Coherent/…
Bi-directional Doppler
Phase quadrature
Continuous Wave
a basic doppler system that simply measures movement, by the…
uses phase quadrature to distinguish flow direction with a sp…
separates the echo frequencies to positive and negative shift…
always two crystals
Non-directional Doppler/ Non Coherent/…
a basic doppler system that simply measures movement, by the…
Bi-directional Doppler
uses phase quadrature to distinguish flow direction with a sp…
50 terms
Understanding Ultrasound Physics chp- 9 Sound Beams
diameter
focus, near zone, focal length (or nea…
focus, or focal point
one-half
shape of a sound beam;... 1- beam width is the same as transduce…
5 terms describe the shape and regions of a sound beam
the location where the beam is the narrowest
the width of the sound beam at the focus is ______-______ the…
diameter
shape of a sound beam;... 1- beam width is the same as transduce…
focus, near zone, focal length (or nea…
5 terms describe the shape and regions of a sound beam
34 terms
Understanding Ultrasound Physics 4th Edition: Chapter 13
What is the ability of the system to c…
How is frame rate determined?
What unit is frame rate measured in?
What does "accuracy in time" (the abil…
Frame rate
Sounds speed in the medium, depth of imaging
Hertz
Temporal resolution
What is the ability of the system to c…
Frame rate
How is frame rate determined?
Sounds speed in the medium, depth of imaging
44 terms
Ultrasound Physics- SPI Registry Review- Chapter 9
Axial Resolution
Axial Resolution Synonyms
Axial Resolution Units of measure
Is Axial Resolution Changed By the Son…
The ability to distinguish two structures that are close to e…
Longitudinal... Axial... Range... Radial... Depth... LARRD Resolution
mm, cm... with shorter pulses, the number is smaller and the ima…
No. A new transducer is needed to change axial resolution
Axial Resolution
The ability to distinguish two structures that are close to e…
Axial Resolution Synonyms
Longitudinal... Axial... Range... Radial... Depth... LARRD Resolution
30 terms
Understanding Ultrasound Physics 4th Edition: Chapter 8
What are the two function that an ultr…
What describes the property of certain…
Piezoelectric materials change shape w…
What is another word for piezoelectric?
transmitting and receiving
piezoelectric effect
reverse piezoelectric effect
ferroelectric
What are the two function that an ultr…
transmitting and receiving
What describes the property of certain…
piezoelectric effect
24 terms
Understanding Ultrasound Physics Ch. 9 Sound Beams
5 terminos que se usan para describir…
¿Dónde la onda es mas estrecha?
¿Cual es la región desde el transducto…
Cual es la distancia desde el rtansduc…
-focus... -near zone... -focal length or near zone length... -far zone…
Focus o focal point
Near zone, near field or Fresnel zone
Focal length, focal depth o near zone length
5 terminos que se usan para describir…
-focus... -near zone... -focal length or near zone length... -far zone…
¿Dónde la onda es mas estrecha?
Focus o focal point
30 terms
Understanding Ultrasound Physics 4th Edition: Chapter 8
What are the two function that an ultr…
What describes the property of certain…
Piezoelectric materials change shape w…
What is another word for piezoelectric?
transmitting and receiving
piezoelectric effect
reverse piezoelectric effect
ferroelectric
What are the two function that an ultr…
transmitting and receiving
What describes the property of certain…
piezoelectric effect
73 terms
Understanding Ultrasound Physics, CH.6
As sound travels in the body, it weake…
After a sound wave is received by the…
Decibel Notation
Decibels (dB)
ATTENUATES
AMPLIFIED
A standard measurement tool used to report changes in attenua…
- are a way of quantifying/measuring:... 1. the STRENGTH of soun…
As sound travels in the body, it weake…
ATTENUATES
After a sound wave is received by the…
AMPLIFIED
43 terms
Understanding Ultrasound Physics 4th Edition: Chapter 12
Mechanical Transducer
Channel
Types of Array Transducers
Linear
- Disc shaped ... - One active element... - Fan or sector shaped... -…
Combination of the active element, wire, and system electroni…
Linear... Annular... Convex
Active elements are arranged in a straight line
Mechanical Transducer
- Disc shaped ... - One active element... - Fan or sector shaped... -…
Channel
Combination of the active element, wire, and system electroni…
43 terms
Understanding Ultrasound Physics 4th Edition: Chapter 12
Mechanical Transducer
Channel
Types of Array Transducers
Linear
- Disc shaped ... - One active element... - Fan or sector shaped... -…
Combination of the active element, wire, and system electroni…
Linear... Annular... Convex
Active elements are arranged in a straight line
Mechanical Transducer
- Disc shaped ... - One active element... - Fan or sector shaped... -…
Channel
Combination of the active element, wire, and system electroni…
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