ARDMS SPI EXAM / ARDMS SPI LATEST EXAM
2025/2026 V1 VERSION B ACTUAL QUESTIONS AND
CORRECT VERIFIED ANSWERS |GUARANTEED PASS
Reflection only occurs if the two media at the boundary have different
acoustic impedances
Snell's Law describes the physics of ________ refraction
When time of flight is measured we can determine
reflector depth the time of flight is will be increased by a
factor of
2
In soft tissue every 13 µs of go-return time means the reflector is
_____ deeper in the body.
1 speed =
distance/time
A property of certain materials to create a voltage when pressure is
applied or when the material is mechanically deformed
piezoelectric effect the complete destruction of all living
microorganisms by means of exposure to heat, chemical agents,
or radiation sterilization refers to the application of a chemical
,agent to reduce or eliminate infectious organisms on an object,
such as a transducer disinfection
Short pulses create more __________ images.
accurate range of frequencies between the highest and
lowest frequency emitted from the transducer bandwidth
The main/center frequency of sound from a pulsed transducer is
determined by: thickness, propagation speed the region or zone in
between the transducer and the focus near zone (fresnel zone) the
region or zone deeper than the focus, beyond the near field
far zone (fraunhofer zone)
Temporal resolution is determined by?
frame rate, more images per second
As temporal resolution improves (higher frame rate), image quality
may degrade
As temporal resolution degrades (lower frame rate) image quality
may improve increasing the line density degrades temporal
resolution but
__________ spatial resolution improves
Using multi focus degrades temporal resolution but improves
lateral resolution
,Harmonics are multiples of _________ _________ transducer
frequency
Sound moves slightly faster in regions of _____________ compression
(higher pressure)
Sound moves slightly slower in regions of _____________ rarefaction
(low pressure)
__________ resolution on a digital display is determined by the
pixel density (the number of pixels per inch) spatial spatial
resolution is also related to the number of lines per frame the
largest number of shades represented by ten bits (n) is
1024 post-processing is performed on
frozen images
If the pixel size is unchanged, the number of pixels ________ increase
___________ improves image detail (spatial resolution) by filling in
missing data, especially for deeper parts of a sector image
interpolation
______ ________ are steered by the system in different angles
and views scan lines dynamic aperture is a form of electronic
__________ focusing receive dynamic aperture minimizes
beam width ___________ variation
, _________ ___________ the ratio of the largest to the smallest signal
strength that each component processes, the number of choices
dynamic range PACS stands for
Picture Archiving and Communication System laminar flow
narrows _________ __________
Doppler spectra
Turbulence may be identified as
Doppler spectral broadening
_________ ________ derived from the law of Conservation of
Energy
Bernoullis Principle
The greater the velocity, the greater the ___
Doppler shift
Doppler measures _________ not amplitude
frequency 20 Hz to 20 kHz is range of human
hearing
We still use 2 MHz to 10 MHz transducers to perform a
Doppler Ultrasound Study but the change in frequency
(doppler shift) ranges from
20-20,000 Hz
2025/2026 V1 VERSION B ACTUAL QUESTIONS AND
CORRECT VERIFIED ANSWERS |GUARANTEED PASS
Reflection only occurs if the two media at the boundary have different
acoustic impedances
Snell's Law describes the physics of ________ refraction
When time of flight is measured we can determine
reflector depth the time of flight is will be increased by a
factor of
2
In soft tissue every 13 µs of go-return time means the reflector is
_____ deeper in the body.
1 speed =
distance/time
A property of certain materials to create a voltage when pressure is
applied or when the material is mechanically deformed
piezoelectric effect the complete destruction of all living
microorganisms by means of exposure to heat, chemical agents,
or radiation sterilization refers to the application of a chemical
,agent to reduce or eliminate infectious organisms on an object,
such as a transducer disinfection
Short pulses create more __________ images.
accurate range of frequencies between the highest and
lowest frequency emitted from the transducer bandwidth
The main/center frequency of sound from a pulsed transducer is
determined by: thickness, propagation speed the region or zone in
between the transducer and the focus near zone (fresnel zone) the
region or zone deeper than the focus, beyond the near field
far zone (fraunhofer zone)
Temporal resolution is determined by?
frame rate, more images per second
As temporal resolution improves (higher frame rate), image quality
may degrade
As temporal resolution degrades (lower frame rate) image quality
may improve increasing the line density degrades temporal
resolution but
__________ spatial resolution improves
Using multi focus degrades temporal resolution but improves
lateral resolution
,Harmonics are multiples of _________ _________ transducer
frequency
Sound moves slightly faster in regions of _____________ compression
(higher pressure)
Sound moves slightly slower in regions of _____________ rarefaction
(low pressure)
__________ resolution on a digital display is determined by the
pixel density (the number of pixels per inch) spatial spatial
resolution is also related to the number of lines per frame the
largest number of shades represented by ten bits (n) is
1024 post-processing is performed on
frozen images
If the pixel size is unchanged, the number of pixels ________ increase
___________ improves image detail (spatial resolution) by filling in
missing data, especially for deeper parts of a sector image
interpolation
______ ________ are steered by the system in different angles
and views scan lines dynamic aperture is a form of electronic
__________ focusing receive dynamic aperture minimizes
beam width ___________ variation
, _________ ___________ the ratio of the largest to the smallest signal
strength that each component processes, the number of choices
dynamic range PACS stands for
Picture Archiving and Communication System laminar flow
narrows _________ __________
Doppler spectra
Turbulence may be identified as
Doppler spectral broadening
_________ ________ derived from the law of Conservation of
Energy
Bernoullis Principle
The greater the velocity, the greater the ___
Doppler shift
Doppler measures _________ not amplitude
frequency 20 Hz to 20 kHz is range of human
hearing
We still use 2 MHz to 10 MHz transducers to perform a
Doppler Ultrasound Study but the change in frequency
(doppler shift) ranges from
20-20,000 Hz
