Edelman SPI Exam /Edelman SPI Exam Preparation/Edelman SPI Practice Exam With
Questions And Correct Answers| Brand New Version!
sound waves are: - (ANSWER)longitudinal and mechanical
the speed of US in soft tissue is CLOSEST to - (ANSWER)(1,540 m/sec)
answer is C: 1500m/sec
a. 1,540km/sec
b. 1.54km/msec
c. 1,500m/s
d. 1,540 mm/sec
the frequency closest to the lower limit of US is - (ANSWER)15,000Hz
which is not an acoustic variable - (ANSWER)intensity
the effects of soft tissue on US are called - (ANSWER)acoustic propagation properties
all of the following are true EXCEPT: - (ANSWER)two waves with identical frequencies must interfere
constructively
put in decreasing order:
a. deca
b. deci
c. micro
d. centi - (ANSWER)abdc
_____ is the time to complete one cycle - (ANSWER)period
,Edelman SPI Exam /Edelman SPI Exam Preparation/Edelman SPI Practice Exam With
Questions And Correct Answers| Brand New Version!
which of the following sound waves is ultrasonic and least useful in diagnostic imaging - (ANSWER)30
KHz
what is the frequency of a wave with 1 msec period - (ANSWER)1 kHz
___ is the distance covered by one cycle - (ANSWER)wavelength
which of the following is determined by the source and the medium - (ANSWER)range resolution
propagation speed = ______ x wavelength - (ANSWER)frequency
as a result of ___ the propagation speed increases - (ANSWER)decreasing compressibility and decreasing
density
put in decreasing order of propagation speed - (ANSWER)solid, liquid, gas
in the same medium if the freuquency of US is increased from 0.77 MHz to 1.54 MHz what happens to
the wavelength - (ANSWER)halved
a sound wave's frequency is 10 MHz the wave is traveling in soft tissue what is its wavelength -
(ANSWER)0.15 mm
if the frequency of an US wave is doubled what happens to the period - (ANSWER)halved
if the frequency of US is increased from 0.77 MHz to 1.54 MHz what happens to the propogation speed -
(ANSWER)remains the same
, Edelman SPI Exam /Edelman SPI Exam Preparation/Edelman SPI Practice Exam With
Questions And Correct Answers| Brand New Version!
the units of pulse repetition frequency are - (ANSWER)per minute
the time from the beginning of a pulse until its end is _____ - (ANSWER)pulse duration
what happens to the speed of sound in a medium when the buld modulus of the medium increases -
(ANSWER)faster
___ resolution is determined by the spatial pulse length - (ANSWER)radial or axial resolution
if a wave's amplitude is doubled what happens to the power - (ANSWER)quadrupled
power of sound has units of - (ANSWER)watts
if the intensity of a sound beam remains unchanged while the beam area is reduced in half what has
happened to the power - (ANSWER)halved
which of these intensities is the smallest:
a. SATP
b. SPTP
c. SATA - (ANSWER)SATA
the duty factor for continuous wave ultrasound is - (ANSWER)1.0 or 100%
what is the minimum value of the duty factor - (ANSWER)0.0%
what are the units of intensity - (ANSWER)watts/cm squared
Questions And Correct Answers| Brand New Version!
sound waves are: - (ANSWER)longitudinal and mechanical
the speed of US in soft tissue is CLOSEST to - (ANSWER)(1,540 m/sec)
answer is C: 1500m/sec
a. 1,540km/sec
b. 1.54km/msec
c. 1,500m/s
d. 1,540 mm/sec
the frequency closest to the lower limit of US is - (ANSWER)15,000Hz
which is not an acoustic variable - (ANSWER)intensity
the effects of soft tissue on US are called - (ANSWER)acoustic propagation properties
all of the following are true EXCEPT: - (ANSWER)two waves with identical frequencies must interfere
constructively
put in decreasing order:
a. deca
b. deci
c. micro
d. centi - (ANSWER)abdc
_____ is the time to complete one cycle - (ANSWER)period
,Edelman SPI Exam /Edelman SPI Exam Preparation/Edelman SPI Practice Exam With
Questions And Correct Answers| Brand New Version!
which of the following sound waves is ultrasonic and least useful in diagnostic imaging - (ANSWER)30
KHz
what is the frequency of a wave with 1 msec period - (ANSWER)1 kHz
___ is the distance covered by one cycle - (ANSWER)wavelength
which of the following is determined by the source and the medium - (ANSWER)range resolution
propagation speed = ______ x wavelength - (ANSWER)frequency
as a result of ___ the propagation speed increases - (ANSWER)decreasing compressibility and decreasing
density
put in decreasing order of propagation speed - (ANSWER)solid, liquid, gas
in the same medium if the freuquency of US is increased from 0.77 MHz to 1.54 MHz what happens to
the wavelength - (ANSWER)halved
a sound wave's frequency is 10 MHz the wave is traveling in soft tissue what is its wavelength -
(ANSWER)0.15 mm
if the frequency of an US wave is doubled what happens to the period - (ANSWER)halved
if the frequency of US is increased from 0.77 MHz to 1.54 MHz what happens to the propogation speed -
(ANSWER)remains the same
, Edelman SPI Exam /Edelman SPI Exam Preparation/Edelman SPI Practice Exam With
Questions And Correct Answers| Brand New Version!
the units of pulse repetition frequency are - (ANSWER)per minute
the time from the beginning of a pulse until its end is _____ - (ANSWER)pulse duration
what happens to the speed of sound in a medium when the buld modulus of the medium increases -
(ANSWER)faster
___ resolution is determined by the spatial pulse length - (ANSWER)radial or axial resolution
if a wave's amplitude is doubled what happens to the power - (ANSWER)quadrupled
power of sound has units of - (ANSWER)watts
if the intensity of a sound beam remains unchanged while the beam area is reduced in half what has
happened to the power - (ANSWER)halved
which of these intensities is the smallest:
a. SATP
b. SPTP
c. SATA - (ANSWER)SATA
the duty factor for continuous wave ultrasound is - (ANSWER)1.0 or 100%
what is the minimum value of the duty factor - (ANSWER)0.0%
what are the units of intensity - (ANSWER)watts/cm squared
