ARDMS SPI STUDY GUIDE
- ANS-
+ or - Doppler Shift - ANS-receiver closer to the transducer= + shift
receiver far from transducer = - shift
+ towards (above baseline)
- away (below baseline)
A 3 dB gain would indicate an increase in intensity via: - ANS-Two Times
three dB consequences in doubling of intensity (or energy)
A 3MHz sound beam travels thru two media. It attenuates five dB in medium A and six dB in
medium B. - ANS-Total attentuation is 11 dB
Attenuation truely provides up as sound travels.
A Doppler (high pass filter out) gets rid of? - ANS-excessive amplitude signals, low pace go with
the flow
A length is the duration of time it takes for - ANS-one whole wavelength to pass a set factor
A sound pulse travels from the transducer to location A, reflects off of it, and returns to the
transducer in 130 μs.
How deep is area A? - ANS-Location A is 10 cm from the transducer
Total journey distance would be 20 cm
A sound wave is touring within the body and propagates from muscle to air. What percentage of
the sound wave is most in all likelihood contemplated on the muscle-air boundary? - ANS-75%
A strongly focused transducer implies a: - ANS-Short focal length and Increased Beam
Divergence
Acoustic Speckle - ANS-the interference sample caused by scatterers that produces the
granular appearance of tissue on a sonographic photograph
Acoustic Variables - ANS-changes that arise inside a medium due to sound touring via that
medium
, Along with crystal diameter, the divergence in the a long way area is likewise determined with
the aid of... - ANS-Frequency
and crystal diameter determines the divergence in the some distance field
Along with image intensity, which of the following also determines the body charge? -
ANS-Image intensity and the number of lines in step with body determines the body fee.
Amplitude - ANS-The maximum or minimal deviation of an acoustic variable from the average
value of that variable; the power of the reflector
An growth in pulse repetition frequency might lead to: - ANS-Increasing pulse repetition
frequency, will increase obligation thing.
↑ PRF ↑ Duty Factor
An boom in purple blood cellular pace will____________Doppler Shift: - ANS-Increase
increase in rbc pace will increase Doppler shift
An growth in the wide variety of pixels on the show will improve: - ANS-Detail Resolution
An ultrasound transducer converts - ANS-Electrical energy into Mechanical power and vice
versa
Areas of high strain and density are referred to as: - ANS-Compressions
As imaging intensity will increase, the pulse repetition frequency (PRF) have to: -
ANS-Decrease
As imaging depth growth, pulse repeition freqency (PRF) decreases.
↑ Imaging Depth ↓ PRF
Attenuation - ANS-A decrease in the amplitude and depth of the sound beam as sound travels
thru tissue.
Attenuation Coefficient - ANS-The charge at which sound is attenuated per unit intensity
Attenuation denotes - ANS-Progressive weakening of the sound beam because it travels
Axial Resolution - ANS-The potential to as it should be discover reflectors which can be
organized parallel to the ultrasound beam
B-mode displays reflector: - ANS-Amplitude and Distance
- ANS-
+ or - Doppler Shift - ANS-receiver closer to the transducer= + shift
receiver far from transducer = - shift
+ towards (above baseline)
- away (below baseline)
A 3 dB gain would indicate an increase in intensity via: - ANS-Two Times
three dB consequences in doubling of intensity (or energy)
A 3MHz sound beam travels thru two media. It attenuates five dB in medium A and six dB in
medium B. - ANS-Total attentuation is 11 dB
Attenuation truely provides up as sound travels.
A Doppler (high pass filter out) gets rid of? - ANS-excessive amplitude signals, low pace go with
the flow
A length is the duration of time it takes for - ANS-one whole wavelength to pass a set factor
A sound pulse travels from the transducer to location A, reflects off of it, and returns to the
transducer in 130 μs.
How deep is area A? - ANS-Location A is 10 cm from the transducer
Total journey distance would be 20 cm
A sound wave is touring within the body and propagates from muscle to air. What percentage of
the sound wave is most in all likelihood contemplated on the muscle-air boundary? - ANS-75%
A strongly focused transducer implies a: - ANS-Short focal length and Increased Beam
Divergence
Acoustic Speckle - ANS-the interference sample caused by scatterers that produces the
granular appearance of tissue on a sonographic photograph
Acoustic Variables - ANS-changes that arise inside a medium due to sound touring via that
medium
, Along with crystal diameter, the divergence in the a long way area is likewise determined with
the aid of... - ANS-Frequency
and crystal diameter determines the divergence in the some distance field
Along with image intensity, which of the following also determines the body charge? -
ANS-Image intensity and the number of lines in step with body determines the body fee.
Amplitude - ANS-The maximum or minimal deviation of an acoustic variable from the average
value of that variable; the power of the reflector
An growth in pulse repetition frequency might lead to: - ANS-Increasing pulse repetition
frequency, will increase obligation thing.
↑ PRF ↑ Duty Factor
An boom in purple blood cellular pace will____________Doppler Shift: - ANS-Increase
increase in rbc pace will increase Doppler shift
An growth in the wide variety of pixels on the show will improve: - ANS-Detail Resolution
An ultrasound transducer converts - ANS-Electrical energy into Mechanical power and vice
versa
Areas of high strain and density are referred to as: - ANS-Compressions
As imaging intensity will increase, the pulse repetition frequency (PRF) have to: -
ANS-Decrease
As imaging depth growth, pulse repeition freqency (PRF) decreases.
↑ Imaging Depth ↓ PRF
Attenuation - ANS-A decrease in the amplitude and depth of the sound beam as sound travels
thru tissue.
Attenuation Coefficient - ANS-The charge at which sound is attenuated per unit intensity
Attenuation denotes - ANS-Progressive weakening of the sound beam because it travels
Axial Resolution - ANS-The potential to as it should be discover reflectors which can be
organized parallel to the ultrasound beam
B-mode displays reflector: - ANS-Amplitude and Distance
