Edelman SPI Review | Q&A Study Guide |
2026 | 100% Verified | A+ Pass
• what is the prefix, symbol and value for an exponent of 10^6 -✓✓mega, M,
1,000,000
• what is the prefix, symbol and value for an exponent of 10^3 -✓✓kilo, k, 1,000
• what is the value for an exponent of 10^0 -✓✓1
• what is the prefix, symbol and value for an exponent of 10^-1 -✓✓deci, d, 1/10
• what is the prefix, symbol, and value for an exponent of 10^-2 -✓✓centi, c, 1/100
• what is the prefix, symbol, and value for an exponent of 10^-3 -✓✓milli, m,
1/1000
• what is the prefix, symbol and value for an exponent of 10^-6 -✓✓micro, u,
1/1000000
• All waves carry _______ from one location to another. -✓✓energy
• Sound is a __________ wave in which particles in the medium move. -
✓✓mechanical
• Can sound travel through a vacuum? -✓✓No. Sound must travel through matter
and there is no matter in vacuums.
• there are areas of ______ and ______ in a sound wave -✓✓compression,
rarefraction
• in what way does sound travel? -✓✓in a straight line
• Sound waves are _____ waves. -✓✓longitudinal
,• Acoustic propagation properties are? -✓✓the effects of the medium upon the
sound wave
• Acoustic variables -✓✓changes that occur within a medium as a result of sound
traveling through that medium
• What are the 3 acoustic variables? -✓✓Pressure (P), density (ρ), and distance
(particle vibration)
• what is the acoustic variable pressure ? -✓✓concentration of force in an area
units: pascals (Pa)
• what is the acoustic variable density? -✓✓concentration of mass in a volume
units: kg/cm^3
• what is the acoustic variable distance? -✓✓measure of particle motion
units: cm, feet, mile
• what does one of the acoustic variables have to do in order to be a sound wave? -
✓✓rhythmically oscillate
• sound waves are also known as ____ waves -✓✓acoustic
• What are the 7 acoustic parameters? -✓✓1. Period
2. Frequency
3. Amplitude
4. Power
5. Intensity
6. Wavelength
7. Propagation speed
• How do particles move in a transverse waves? -✓✓perpendicular to the wave
propagation
(ex: hold end of string and shake up and down)
• how do particles move in longitudinal waves? -✓✓in the same direction that the
wave propagates.
,sound is a longitudinal wave.
• what are considered in-phase waves? -✓✓a pair of waves that have their peaks at
the same time and same location
• what are considered out-of-phase waves? -✓✓a pair of waves that have their
peaks at different points and at different times
• what kind of interference occurs with in-phase waves? -✓✓constructive
interference
• what kind of interference occurs with out-phase waves? -✓✓destructive
interference
• what is interference (for sound)? -✓✓when more than one sound beam travel in a
medium and can arrive at the same place at the same time. the waves then loose
their individual characteristics and combine to form a single wave.
• when the frequency of different waves differ, _____________ interference occur
-✓✓both constrictive and destructive
• _____ describe the features of a sound wave -✓✓parameters
• what are the 7 parameters of sound? (CW) -✓✓period, frequency, amplitude,
power, intensity, wavelength, speed
• _____ is the time it takes a wave to vibrate a single cycle, or the time from the
start of one cycle to the start of the next -✓✓period
• what is period reported in? -✓✓time (microseconds)
• what is the typical value of a period? -✓✓.06-.5 us (microseconds)
• what is period determined by? -✓✓determined by the sound source only, not the
medium
, • Is period adjustable? -✓✓-No. The sonographer cannot change the period while
using a basic ultrasound system with a particular transducer.
• _____ is the number of particular events that occur in a specific duration of time.
in ultrasound, this of a wave is described as the number of cycles that occurs in one
second -✓✓frequency
• what are the units for frequency? -✓✓Hertz (Hz)
1 cycle/second = 1Hz
• what is the typical value for frequency? -✓✓2 MHz to 15 MHz
• what is frequency determined by? -✓✓Sound source only, not the medium
through which the sound is traveling
• Is frequency adjustable by the sonographer? -✓✓no
• the sound wave is considered infrasound when it is -✓✓less than 20 Hz
• the sound wave is considered audible sound when it is -✓✓between 20 Hz and 20
kHz (20,000Hz)
• the sound wave is considered ultrasound when it is -✓✓greater than 20 kHz
• Why is frequency important in diagnostic sonography? -✓✓because it affects
penetration and image quality.
• what is the relationship between frequency and period -✓✓inversely related
(p * f = 1) --> reciprocal
• What are the 3 bigness parameters? (CW) -✓✓P.I.A power amplitude intensity
• ____ is the bigness of a wave. it is the difference between the maximum value
and the average or undisturbed value. this is also the difference between the
minimum and average. -✓✓amplitude
• what are the units for amplitude? -✓✓dB
2026 | 100% Verified | A+ Pass
• what is the prefix, symbol and value for an exponent of 10^6 -✓✓mega, M,
1,000,000
• what is the prefix, symbol and value for an exponent of 10^3 -✓✓kilo, k, 1,000
• what is the value for an exponent of 10^0 -✓✓1
• what is the prefix, symbol and value for an exponent of 10^-1 -✓✓deci, d, 1/10
• what is the prefix, symbol, and value for an exponent of 10^-2 -✓✓centi, c, 1/100
• what is the prefix, symbol, and value for an exponent of 10^-3 -✓✓milli, m,
1/1000
• what is the prefix, symbol and value for an exponent of 10^-6 -✓✓micro, u,
1/1000000
• All waves carry _______ from one location to another. -✓✓energy
• Sound is a __________ wave in which particles in the medium move. -
✓✓mechanical
• Can sound travel through a vacuum? -✓✓No. Sound must travel through matter
and there is no matter in vacuums.
• there are areas of ______ and ______ in a sound wave -✓✓compression,
rarefraction
• in what way does sound travel? -✓✓in a straight line
• Sound waves are _____ waves. -✓✓longitudinal
,• Acoustic propagation properties are? -✓✓the effects of the medium upon the
sound wave
• Acoustic variables -✓✓changes that occur within a medium as a result of sound
traveling through that medium
• What are the 3 acoustic variables? -✓✓Pressure (P), density (ρ), and distance
(particle vibration)
• what is the acoustic variable pressure ? -✓✓concentration of force in an area
units: pascals (Pa)
• what is the acoustic variable density? -✓✓concentration of mass in a volume
units: kg/cm^3
• what is the acoustic variable distance? -✓✓measure of particle motion
units: cm, feet, mile
• what does one of the acoustic variables have to do in order to be a sound wave? -
✓✓rhythmically oscillate
• sound waves are also known as ____ waves -✓✓acoustic
• What are the 7 acoustic parameters? -✓✓1. Period
2. Frequency
3. Amplitude
4. Power
5. Intensity
6. Wavelength
7. Propagation speed
• How do particles move in a transverse waves? -✓✓perpendicular to the wave
propagation
(ex: hold end of string and shake up and down)
• how do particles move in longitudinal waves? -✓✓in the same direction that the
wave propagates.
,sound is a longitudinal wave.
• what are considered in-phase waves? -✓✓a pair of waves that have their peaks at
the same time and same location
• what are considered out-of-phase waves? -✓✓a pair of waves that have their
peaks at different points and at different times
• what kind of interference occurs with in-phase waves? -✓✓constructive
interference
• what kind of interference occurs with out-phase waves? -✓✓destructive
interference
• what is interference (for sound)? -✓✓when more than one sound beam travel in a
medium and can arrive at the same place at the same time. the waves then loose
their individual characteristics and combine to form a single wave.
• when the frequency of different waves differ, _____________ interference occur
-✓✓both constrictive and destructive
• _____ describe the features of a sound wave -✓✓parameters
• what are the 7 parameters of sound? (CW) -✓✓period, frequency, amplitude,
power, intensity, wavelength, speed
• _____ is the time it takes a wave to vibrate a single cycle, or the time from the
start of one cycle to the start of the next -✓✓period
• what is period reported in? -✓✓time (microseconds)
• what is the typical value of a period? -✓✓.06-.5 us (microseconds)
• what is period determined by? -✓✓determined by the sound source only, not the
medium
, • Is period adjustable? -✓✓-No. The sonographer cannot change the period while
using a basic ultrasound system with a particular transducer.
• _____ is the number of particular events that occur in a specific duration of time.
in ultrasound, this of a wave is described as the number of cycles that occurs in one
second -✓✓frequency
• what are the units for frequency? -✓✓Hertz (Hz)
1 cycle/second = 1Hz
• what is the typical value for frequency? -✓✓2 MHz to 15 MHz
• what is frequency determined by? -✓✓Sound source only, not the medium
through which the sound is traveling
• Is frequency adjustable by the sonographer? -✓✓no
• the sound wave is considered infrasound when it is -✓✓less than 20 Hz
• the sound wave is considered audible sound when it is -✓✓between 20 Hz and 20
kHz (20,000Hz)
• the sound wave is considered ultrasound when it is -✓✓greater than 20 kHz
• Why is frequency important in diagnostic sonography? -✓✓because it affects
penetration and image quality.
• what is the relationship between frequency and period -✓✓inversely related
(p * f = 1) --> reciprocal
• What are the 3 bigness parameters? (CW) -✓✓P.I.A power amplitude intensity
• ____ is the bigness of a wave. it is the difference between the maximum value
and the average or undisturbed value. this is also the difference between the
minimum and average. -✓✓amplitude
• what are the units for amplitude? -✓✓dB
