ARDMS SPI STUDY GUIDE
- ANS-
+ or - Doppler Shift - ANS-receiver toward the transducer= + shift
receiver faraway from transducer = - shift
+ towards (above baseline)
- away (beneath baseline)
A three dB gain could indicate an increase in intensity by way of: - ANS-Two Times
three dB outcomes in doubling of intensity (or strength)
A 3MHz sound beam travels thru two media. It attenuates 5 dB in medium A and six dB in
medium B. - ANS-Total attentuation is 11 dB
Attenuation certainly provides up as sound travels.
A Doppler (excessive pass filter out) removes? - ANS-high amplitude alerts, low velocity float
A duration is the length of time it takes for - ANS-one whole wavelength to pass a fixed factor
A sound pulse travels from the transducer to area A, displays off of it, and returns to the
transducer in one hundred thirty μs.
How deep is location A? - ANS-Location A is 10 cm from the transducer
Total journey distance could be 20 cm
A sound wave is traveling within the body and propagates from muscle to air. What percent of
the sound wave is most likely contemplated on the muscle-air boundary? - ANS-75%
A strongly targeted transducer implies a: - ANS-Short focal length and Increased Beam
Divergence
Acoustic Speckle - ANS-the interference pattern as a result of scatterers that produces the
granular look of tissue on a sonographic image
Acoustic Variables - ANS-adjustments that arise within a medium due to sound journeying thru
that medium
Along with crystal diameter, the divergence in the a ways subject is likewise determined by... -
ANS-Frequency
and crystal diameter determines the divergence in the a ways discipline
Along with photo depth, which of the subsequent additionally determines the body fee? -
ANS-Image intensity and the quantity of traces in step with frame determines the frame rate.
Amplitude - ANS-The maximum or minimal deviation of an acoustic variable from the average
fee of that variable; the strength of the reflector
An growth in pulse repetition frequency might result in: - ANS-Increasing pulse repetition
frequency, will increase responsibility thing.
↑ PRF ↑ Duty Factor
An growth in purple blood cellular speed will____________Doppler Shift: - ANS-Increase
, boom in rbc speed increases Doppler shift
An increase within the wide variety of pixels at the show will enhance: - ANS-Detail Resolution
An ultrasound transducer converts - ANS-Electrical electricity into Mechanical energy and vice
versa
Areas of high pressure and density are referred to as: - ANS-Compressions
As imaging depth will increase, the pulse repetition frequency (PRF) need to: - ANS-Decrease
As imaging depth boom, pulse repeition freqency (PRF) decreases.
↑ Imaging Depth ↓ PRF
Attenuation - ANS-A lower in the amplitude and intensity of the sound beam as sound travels
thru tissue.
Attenuation Coefficient - ANS-The rate at which sound is attenuated per unit depth
Attenuation denotes - ANS-Progressive weakening of the sound beam because it travels
Axial Resolution - ANS-The potential to accurately discover reflectors which are arranged
parallel to the ultrasound beam
B-mode shows reflector: - ANS-Amplitude and Distance
Backscatter - ANS-Scattered sound waves that make their manner again to the transducer and
bring an photo at the show
Beam Properties - ANS-The ultrasound beam propagates as a longitudinal wave from the
transducer surface into the propagation medium, and exhibits distinct beam styles: - a barely
converging beam out to a distance specified by using the geometry and frequency of the
transducer (the close to discipline), and - a diverging beam beyond that factor (the far area).
Beam Uniformity Ratio - ANS-The ratio of the middle intensity to the average spatial intensity;
additionally called the SP/SA factor or beam uniformity coefficient
Capacitive Micromachined Ultrasound Transducers - ANS-Technology used to create similar
transducer technology to piezoelectric materials
Clinical imaging transducers are: - ANS-Wide bandwidth; Low Q thing
Wide variety of frequencies inside the pulse and brief period of time that the sound is emitted
(pulsed wave)
Compression - ANS-An location inside the sound wave of excessive strain and density
Continuous Wave - ANS-Sound that is continuously transmitted
Continuous wave Doppler has a responsibility thing of - ANS-a hundred%
CW Doppler is always transmitting sound making it is duty element one hundred%
Damping - ANS-The process of lowering the variety of cycles of every pulse for you to improve
axial resolution
Decibels - ANS-A unit that establishes a courting or assessment between two values of power,
depth, or amplitude
Density - ANS-Mass in line with unit extent
Directly Related - ANS-Relationship that implies that if one variable decreases, the other also
decreases or if one variable increases, the opposite also increases;
- ANS-
+ or - Doppler Shift - ANS-receiver toward the transducer= + shift
receiver faraway from transducer = - shift
+ towards (above baseline)
- away (beneath baseline)
A three dB gain could indicate an increase in intensity by way of: - ANS-Two Times
three dB outcomes in doubling of intensity (or strength)
A 3MHz sound beam travels thru two media. It attenuates 5 dB in medium A and six dB in
medium B. - ANS-Total attentuation is 11 dB
Attenuation certainly provides up as sound travels.
A Doppler (excessive pass filter out) removes? - ANS-high amplitude alerts, low velocity float
A duration is the length of time it takes for - ANS-one whole wavelength to pass a fixed factor
A sound pulse travels from the transducer to area A, displays off of it, and returns to the
transducer in one hundred thirty μs.
How deep is location A? - ANS-Location A is 10 cm from the transducer
Total journey distance could be 20 cm
A sound wave is traveling within the body and propagates from muscle to air. What percent of
the sound wave is most likely contemplated on the muscle-air boundary? - ANS-75%
A strongly targeted transducer implies a: - ANS-Short focal length and Increased Beam
Divergence
Acoustic Speckle - ANS-the interference pattern as a result of scatterers that produces the
granular look of tissue on a sonographic image
Acoustic Variables - ANS-adjustments that arise within a medium due to sound journeying thru
that medium
Along with crystal diameter, the divergence in the a ways subject is likewise determined by... -
ANS-Frequency
and crystal diameter determines the divergence in the a ways discipline
Along with photo depth, which of the subsequent additionally determines the body fee? -
ANS-Image intensity and the quantity of traces in step with frame determines the frame rate.
Amplitude - ANS-The maximum or minimal deviation of an acoustic variable from the average
fee of that variable; the strength of the reflector
An growth in pulse repetition frequency might result in: - ANS-Increasing pulse repetition
frequency, will increase responsibility thing.
↑ PRF ↑ Duty Factor
An growth in purple blood cellular speed will____________Doppler Shift: - ANS-Increase
, boom in rbc speed increases Doppler shift
An increase within the wide variety of pixels at the show will enhance: - ANS-Detail Resolution
An ultrasound transducer converts - ANS-Electrical electricity into Mechanical energy and vice
versa
Areas of high pressure and density are referred to as: - ANS-Compressions
As imaging depth will increase, the pulse repetition frequency (PRF) need to: - ANS-Decrease
As imaging depth boom, pulse repeition freqency (PRF) decreases.
↑ Imaging Depth ↓ PRF
Attenuation - ANS-A lower in the amplitude and intensity of the sound beam as sound travels
thru tissue.
Attenuation Coefficient - ANS-The rate at which sound is attenuated per unit depth
Attenuation denotes - ANS-Progressive weakening of the sound beam because it travels
Axial Resolution - ANS-The potential to accurately discover reflectors which are arranged
parallel to the ultrasound beam
B-mode shows reflector: - ANS-Amplitude and Distance
Backscatter - ANS-Scattered sound waves that make their manner again to the transducer and
bring an photo at the show
Beam Properties - ANS-The ultrasound beam propagates as a longitudinal wave from the
transducer surface into the propagation medium, and exhibits distinct beam styles: - a barely
converging beam out to a distance specified by using the geometry and frequency of the
transducer (the close to discipline), and - a diverging beam beyond that factor (the far area).
Beam Uniformity Ratio - ANS-The ratio of the middle intensity to the average spatial intensity;
additionally called the SP/SA factor or beam uniformity coefficient
Capacitive Micromachined Ultrasound Transducers - ANS-Technology used to create similar
transducer technology to piezoelectric materials
Clinical imaging transducers are: - ANS-Wide bandwidth; Low Q thing
Wide variety of frequencies inside the pulse and brief period of time that the sound is emitted
(pulsed wave)
Compression - ANS-An location inside the sound wave of excessive strain and density
Continuous Wave - ANS-Sound that is continuously transmitted
Continuous wave Doppler has a responsibility thing of - ANS-a hundred%
CW Doppler is always transmitting sound making it is duty element one hundred%
Damping - ANS-The process of lowering the variety of cycles of every pulse for you to improve
axial resolution
Decibels - ANS-A unit that establishes a courting or assessment between two values of power,
depth, or amplitude
Density - ANS-Mass in line with unit extent
Directly Related - ANS-Relationship that implies that if one variable decreases, the other also
decreases or if one variable increases, the opposite also increases;
