ARDMS SPI Study Material
-10dB manner - ANS-one-tenth
-3dB approach - ANS-1/2
+10dB method to - ANS-ten times large
+3dB method to - ANS-double
1540 m/s is approximately - ANS-1 mile consistent with second
2-D array transducers create - ANS-3-D pix
three acoustic variables - ANS-strain, density, distance (PDD)
3 bigness parameters - ANS-amplitude, energy, intensity
four-D imaging extensively utilized - ANS-2-D array probes
4-D imaging is what - ANS-a ultra-modern way to explain 3-D imaging
7 acoustic parameters - ANS-duration, electricity, propagation speed, frequency, amplitude,
intensity, wavelength
a simple transducer has how many components - ANS-7
matching layer, PZT, backing cloth, digital shield, acoustic insulator, case, and twine
a combination of temperature and exposure time determine - ANS-the likelihood of dangerous
bioeffects. With better temperatures, dangerous results can arise with shorter publicity instances
a defocused sound beam is created by way of this D-fashioned electrical pattern - ANS-look at
the image
a centered beam instructed to the left is created by means of this electric sample from the beam
former of a phased array gadget - ANS-
a targeted beam instructed to the proper is created via this electric sample from the beam
former of a phased array system - ANS-observe the photo
a centered, unsteered sound beam is created through this electrical pattern from the beam
former of a phased array device! - ANS-
a big reflection will arise if - ANS-the impedances are notably exclusive
a membrane hydrophone - ANS-very skinny membrane of piezoelectric plastic. Simplest the
very middle is stress touchy
a terrible doppler shift indicates blood waft is going - ANS-far from the transducer, below the
baseline
a advantageous doppler shift indicates blood flow goes - ANS-toward the transducer, above the
baseline
a shallower targeted, unsteered sound beam is created through this electric pattern from the
beam former of a phased array machine! - ANS-
a quick pulse also has those two matters - ANS-much less ringing and better frequency
a small reflection will arise if - ANS-the impedances are slightly one-of-a-kind
a transducer is a tool that - ANS-converts one shape of power into any other
A-mode X, Y, and Z axis - ANS-X - intensity
Y - amplitude
Z - none
,A-mode, amplitude - ANS-seems as a chain of upward spikes the fee that takes place maximum
regularly in a given facts set
absorption has what kind of courting to frequency - ANS-without delay associated
absorption happens when - ANS-ultrasonic power is converted into every other energy shape
including warmth
accuracy - ANS-error-unfastened
acoustic impedance is likewise known as - ANS-function impedance
acoustic impedance is calculated by using - ANS-multiplying density of a medium by using the
rate at which sound travels inside the medium
acoustic parameters do what - ANS-describe the capabilities of a legitimate wave
acoustic speckle - ANS-noise on account of the positive and damaging interference of small
sound wavelets
acoustic variables are used to do what - ANS-distinguish between sound waves and different
kind of waves
acoustic speed and compressibility are - ANS-inversely related
acoustic pace and density are - ANS-inversely related
acoustic-optics - ANS-based totally at the interplay of sound and light,
a shadowing system known as a Schlieren, permits us to view the form and sound beam in a
medium
acute and obtuse angles are also called - ANS-oblique angles
acute is - ANS-much less than 90 ranges
adjusting scale to its maximum
benefits and drawbacks - ANS-the structures PRF also gets expanded to its most, and the
nyquist restriction receives accelerated too
advantages: maximizing PRD raises the nyquist restriction and aliasing is much less possibly to
seem
negative aspects: higher PRF reduces sensitivity to low velocities. Very high velocities will
reason aliasing artifacts to persist, even if the size is maximized
benefits of virtual test converters - ANS-uniformity, stability, durability, speed, accuracy
air has noticeably low stiffness so sound travels - ANS-slowly
AIUM statement on in vitro bioeffects - ANS-- in vitro bioeffects research is vital
- in vitro bioeffects are actual despite the fact that they'll now not apply to the clinical setting
- in vitro bioeffect research that claims direct scientific significance (with out in vivo validation)
need to be regarded with caution
ALARA - ANS-As Low As Reasonably Achievable; all publicity should be saved to a minimum
aliasing in pulsed doppler is - ANS-very high velocities in a single course are incorrectly
displayed as going inside the opposite path
aliasing is present in - ANS-photograph A,
picture B is zoomed in,
it is showing the drift within the vessel with red and blue hues and if it's miles going towards or
away from the transducer
aliasing takes place when - ANS-sampling fee is just too low in assessment to the measured
blood velocities
aliasing occurs with - ANS-pulse doppler never continuous wave doppler
,all intensities have units of - ANS-W/cm^2
all intensities have units of what - ANS-W/cm2
all waves convey what - ANS-energy
always recall for any unmarried crystal transducer that when a PZT is broken then - ANS-the
complete photo might be lost
amplification - ANS-the primary feature of the receiver is amplification, also known as receiver
benefit
amplification (benefit) devices - ANS-decibels (dB)
amplification/advantage impact on an photo - ANS-the whole image is made brighter or darker
while the sonographer adjusts the receiver advantage
amplitude also is - ANS-the difference among the peak and the baseline of a waveform
amplitude and intensity are - ANS-without delay associated
amplitude and power are - ANS-at once associated
amplitude is decided by using - ANS-the sound supply to start with. However, amplitude
decreases because it travels thru the body so it depends at the characteristics of both the sound
wave and medium
amplitude gadgets - ANS-decibels (dB)
an opportunity description of dynamic range is - ANS-wide variety of alternatives
an aperture is an - ANS-starting or hole
an array accommodates of a unmarried slab of PZT crystals reduce into a group of separate
portions referred to as - ANS-elements, they every have their very own wire connection and are
isolated from neighboring crystals
analog and virtual image records - ANS-translating photo data from the real world (analog) to
the compute world (virtual) and returned once more is a five step process
analog and virtual photograph information 5 step method - ANS-1. Analog to digital converter
2. Preprocessing
3. Postprocessing
four. Digital to analog converter
5. Video display
analog is - ANS-real global
analog numbers are - ANS-actual world numbers, unlimited continuous variety of values, are
utilized in our normal lives
analog numbers vs digital numbers - ANS-analog: real world, unlimited # of alternatives,
continuous values (1, 1.01, 1.02, 1.03)
virtual: laptop world, constrained selections, discrete values (1,2,three)
anatomy of a TGC curve (5) - ANS-close to benefit, put off, slope, knee, far gain
anechoic - ANS-an excessive form of hypoechoic, that means totally with out echoes
angles with a measure apart from ninety tiers also are referred to as - ANS-indirect angles
annular array arrangement - ANS-factors are organized as round earrings with a common
middle
every other precis of contrast harmonics - ANS-- created during mirrored image off of
microbubble
- happens simplest whilst contrast retailers are gift and with MI's extra than zero.1
, - outcomes from nonlinear conduct of microbubble
- stronger harmonic sign
apodization - ANS-decreasing the strength of aspect and grating lobes
apodization does what - ANS-reduces lobe artifacts
vicinity devices - ANS-cm^2, ft^2
artifacts - ANS-basically an mistakes in imaging
as blood flows thru the circulation, energy is lost in three ways: - ANS-1. Viscous loss
2. Frictional loss
3. Inertial loss
as substances grow to be extra dense the speed of sound inside the cloth will - ANS-decrease
as materials grow to be stiffer the velocity of sound within the fabric will - ANS-growth
as sound travels how does the width of the beam alternate - ANS-starts offevolved out at exactly
the equal length because the transducer diameter,
gets step by step narrower till it reaches its smallest diameter,
then it expands or diverges
at angles aside from 0 levels and one hundred eighty tiers, only a component - ANS-of the
actual velocity is measured
at what c language must great warranty be executed - ANS-pleasant guarantee reviews must
be achieved mechanically
attenuate approach - ANS-to weaken
attenuation coefficent is how plenty of the frequency - ANS-one-half the frequency
attenuation coefficient is - ANS-the number of decibels of attenuation that takes place whilst
sound travels one centimeter
attenuation decreases in what 3 regions because it travels - ANS-amplitude, strength, and
intensity as sound travels
attenuation in air is - ANS-extremely excessive
attenuation in blood, urine, and biologic fluid is - ANS-low
attenuation in bone and lung is - ANS-even higher than muscle because bone absorbs
ultrasound electricity and lungs reason quite a few scattering and absorption
attenuation in fat is - ANS-low
attenuation in muscle is - ANS-better attenuation than smooth tissue
attenuation in gentle tissue is - ANS-intermediate
attenuation in water is - ANS-extremely low
attenuation is determined by way of 2 factors - ANS-route period and frequency of sound
attenuation is measured in - ANS-decibels, and are stated as a relative change no longer
absolute
audible sound frequency - ANS-20-20,000 Hz
audio of bidirectional doppler requires - ANS-stereo headphones or audio system, wherein
sound from one speaker represents glide towards the transducer and sound from the opposite
speaker represents waft far from the transducer
autocorrelation - ANS-virtual computer-primarily based technique used to investigate colour waft
doppler. Autocorrelation is used with coloration doppler due to the giant amount of statistics that
is processed. It's miles much less accurate however faster to perform than speedy Fourier
transforms
-10dB manner - ANS-one-tenth
-3dB approach - ANS-1/2
+10dB method to - ANS-ten times large
+3dB method to - ANS-double
1540 m/s is approximately - ANS-1 mile consistent with second
2-D array transducers create - ANS-3-D pix
three acoustic variables - ANS-strain, density, distance (PDD)
3 bigness parameters - ANS-amplitude, energy, intensity
four-D imaging extensively utilized - ANS-2-D array probes
4-D imaging is what - ANS-a ultra-modern way to explain 3-D imaging
7 acoustic parameters - ANS-duration, electricity, propagation speed, frequency, amplitude,
intensity, wavelength
a simple transducer has how many components - ANS-7
matching layer, PZT, backing cloth, digital shield, acoustic insulator, case, and twine
a combination of temperature and exposure time determine - ANS-the likelihood of dangerous
bioeffects. With better temperatures, dangerous results can arise with shorter publicity instances
a defocused sound beam is created by way of this D-fashioned electrical pattern - ANS-look at
the image
a centered beam instructed to the left is created by means of this electric sample from the beam
former of a phased array gadget - ANS-
a targeted beam instructed to the proper is created via this electric sample from the beam
former of a phased array system - ANS-observe the photo
a centered, unsteered sound beam is created through this electrical pattern from the beam
former of a phased array device! - ANS-
a big reflection will arise if - ANS-the impedances are notably exclusive
a membrane hydrophone - ANS-very skinny membrane of piezoelectric plastic. Simplest the
very middle is stress touchy
a terrible doppler shift indicates blood waft is going - ANS-far from the transducer, below the
baseline
a advantageous doppler shift indicates blood flow goes - ANS-toward the transducer, above the
baseline
a shallower targeted, unsteered sound beam is created through this electric pattern from the
beam former of a phased array machine! - ANS-
a quick pulse also has those two matters - ANS-much less ringing and better frequency
a small reflection will arise if - ANS-the impedances are slightly one-of-a-kind
a transducer is a tool that - ANS-converts one shape of power into any other
A-mode X, Y, and Z axis - ANS-X - intensity
Y - amplitude
Z - none
,A-mode, amplitude - ANS-seems as a chain of upward spikes the fee that takes place maximum
regularly in a given facts set
absorption has what kind of courting to frequency - ANS-without delay associated
absorption happens when - ANS-ultrasonic power is converted into every other energy shape
including warmth
accuracy - ANS-error-unfastened
acoustic impedance is likewise known as - ANS-function impedance
acoustic impedance is calculated by using - ANS-multiplying density of a medium by using the
rate at which sound travels inside the medium
acoustic parameters do what - ANS-describe the capabilities of a legitimate wave
acoustic speckle - ANS-noise on account of the positive and damaging interference of small
sound wavelets
acoustic variables are used to do what - ANS-distinguish between sound waves and different
kind of waves
acoustic speed and compressibility are - ANS-inversely related
acoustic pace and density are - ANS-inversely related
acoustic-optics - ANS-based totally at the interplay of sound and light,
a shadowing system known as a Schlieren, permits us to view the form and sound beam in a
medium
acute and obtuse angles are also called - ANS-oblique angles
acute is - ANS-much less than 90 ranges
adjusting scale to its maximum
benefits and drawbacks - ANS-the structures PRF also gets expanded to its most, and the
nyquist restriction receives accelerated too
advantages: maximizing PRD raises the nyquist restriction and aliasing is much less possibly to
seem
negative aspects: higher PRF reduces sensitivity to low velocities. Very high velocities will
reason aliasing artifacts to persist, even if the size is maximized
benefits of virtual test converters - ANS-uniformity, stability, durability, speed, accuracy
air has noticeably low stiffness so sound travels - ANS-slowly
AIUM statement on in vitro bioeffects - ANS-- in vitro bioeffects research is vital
- in vitro bioeffects are actual despite the fact that they'll now not apply to the clinical setting
- in vitro bioeffect research that claims direct scientific significance (with out in vivo validation)
need to be regarded with caution
ALARA - ANS-As Low As Reasonably Achievable; all publicity should be saved to a minimum
aliasing in pulsed doppler is - ANS-very high velocities in a single course are incorrectly
displayed as going inside the opposite path
aliasing is present in - ANS-photograph A,
picture B is zoomed in,
it is showing the drift within the vessel with red and blue hues and if it's miles going towards or
away from the transducer
aliasing takes place when - ANS-sampling fee is just too low in assessment to the measured
blood velocities
aliasing occurs with - ANS-pulse doppler never continuous wave doppler
,all intensities have units of - ANS-W/cm^2
all intensities have units of what - ANS-W/cm2
all waves convey what - ANS-energy
always recall for any unmarried crystal transducer that when a PZT is broken then - ANS-the
complete photo might be lost
amplification - ANS-the primary feature of the receiver is amplification, also known as receiver
benefit
amplification (benefit) devices - ANS-decibels (dB)
amplification/advantage impact on an photo - ANS-the whole image is made brighter or darker
while the sonographer adjusts the receiver advantage
amplitude also is - ANS-the difference among the peak and the baseline of a waveform
amplitude and intensity are - ANS-without delay associated
amplitude and power are - ANS-at once associated
amplitude is decided by using - ANS-the sound supply to start with. However, amplitude
decreases because it travels thru the body so it depends at the characteristics of both the sound
wave and medium
amplitude gadgets - ANS-decibels (dB)
an opportunity description of dynamic range is - ANS-wide variety of alternatives
an aperture is an - ANS-starting or hole
an array accommodates of a unmarried slab of PZT crystals reduce into a group of separate
portions referred to as - ANS-elements, they every have their very own wire connection and are
isolated from neighboring crystals
analog and virtual image records - ANS-translating photo data from the real world (analog) to
the compute world (virtual) and returned once more is a five step process
analog and virtual photograph information 5 step method - ANS-1. Analog to digital converter
2. Preprocessing
3. Postprocessing
four. Digital to analog converter
5. Video display
analog is - ANS-real global
analog numbers are - ANS-actual world numbers, unlimited continuous variety of values, are
utilized in our normal lives
analog numbers vs digital numbers - ANS-analog: real world, unlimited # of alternatives,
continuous values (1, 1.01, 1.02, 1.03)
virtual: laptop world, constrained selections, discrete values (1,2,three)
anatomy of a TGC curve (5) - ANS-close to benefit, put off, slope, knee, far gain
anechoic - ANS-an excessive form of hypoechoic, that means totally with out echoes
angles with a measure apart from ninety tiers also are referred to as - ANS-indirect angles
annular array arrangement - ANS-factors are organized as round earrings with a common
middle
every other precis of contrast harmonics - ANS-- created during mirrored image off of
microbubble
- happens simplest whilst contrast retailers are gift and with MI's extra than zero.1
, - outcomes from nonlinear conduct of microbubble
- stronger harmonic sign
apodization - ANS-decreasing the strength of aspect and grating lobes
apodization does what - ANS-reduces lobe artifacts
vicinity devices - ANS-cm^2, ft^2
artifacts - ANS-basically an mistakes in imaging
as blood flows thru the circulation, energy is lost in three ways: - ANS-1. Viscous loss
2. Frictional loss
3. Inertial loss
as substances grow to be extra dense the speed of sound inside the cloth will - ANS-decrease
as materials grow to be stiffer the velocity of sound within the fabric will - ANS-growth
as sound travels how does the width of the beam alternate - ANS-starts offevolved out at exactly
the equal length because the transducer diameter,
gets step by step narrower till it reaches its smallest diameter,
then it expands or diverges
at angles aside from 0 levels and one hundred eighty tiers, only a component - ANS-of the
actual velocity is measured
at what c language must great warranty be executed - ANS-pleasant guarantee reviews must
be achieved mechanically
attenuate approach - ANS-to weaken
attenuation coefficent is how plenty of the frequency - ANS-one-half the frequency
attenuation coefficient is - ANS-the number of decibels of attenuation that takes place whilst
sound travels one centimeter
attenuation decreases in what 3 regions because it travels - ANS-amplitude, strength, and
intensity as sound travels
attenuation in air is - ANS-extremely excessive
attenuation in blood, urine, and biologic fluid is - ANS-low
attenuation in bone and lung is - ANS-even higher than muscle because bone absorbs
ultrasound electricity and lungs reason quite a few scattering and absorption
attenuation in fat is - ANS-low
attenuation in muscle is - ANS-better attenuation than smooth tissue
attenuation in gentle tissue is - ANS-intermediate
attenuation in water is - ANS-extremely low
attenuation is determined by way of 2 factors - ANS-route period and frequency of sound
attenuation is measured in - ANS-decibels, and are stated as a relative change no longer
absolute
audible sound frequency - ANS-20-20,000 Hz
audio of bidirectional doppler requires - ANS-stereo headphones or audio system, wherein
sound from one speaker represents glide towards the transducer and sound from the opposite
speaker represents waft far from the transducer
autocorrelation - ANS-virtual computer-primarily based technique used to investigate colour waft
doppler. Autocorrelation is used with coloration doppler due to the giant amount of statistics that
is processed. It's miles much less accurate however faster to perform than speedy Fourier
transforms
