EDELMAN REVIEW EXAM QUESTIONS
AND ANSWERS 100% PASS
The AIUM suggest:
A. Do not perform studies without reason
B. Do not prolong Studies without reason
C. Minimize exposure time (but perform and complete diagnostic exam)
D. Use minimum output power and highest receiver gain required to produce optimal images
(ALARA Principle)
E. All of the above - ANS All of the above
sound waves are:
A. electric
B. Mechanical, transverse
C. spectral
D. longitudinal, mechanical - ANS longitudinal, mechanical
The speed of US in soft tissue is closest to:
A. 1,540 km/sec
B. 1.54 km/msec
C. 1,500 m/s
D. 1,540 mm/sec - ANS 1,500 m/s
the frequency closest to the lower limit of US is:
@COPYRIGHT ALL RIGHTS RESERVED PAGE 1 OF 51
,A. 19,000 kHz
B. 10,000 MHz
C. 20,000 msec
D. 15, 000 Hz - ANS 15,000 Hz
which is not an acoustic variable?
A. density
B. pressure
C. distance
D. intensity - ANS intensity
The effects of soft tissue on US are called:
a. acoustic proliferation properties
b. dynamic effects
c. acoustic propagation properties
d. biologic effects - ANS acoustic propagation properties
All of the following are true EXCEPT
a. two waves with identical frequencies must interfere constructively
b. constructive interference is associated with waves that are in-phase
c. out-of-phase waves interfere destructively
d. waves of different frequencies may exhibit both constructive and destructive inference at
different times - ANS two waves with identical frequencies must interfere constructively
Put in decreasing order:
A. deca
B. deci
C. micro
@COPYRIGHT ALL RIGHTS RESERVED PAGE 2 OF 51
,D. centi - ANS deca
deci
centi
micro
______ is the time to complete one cycle
a. pulse duration
b. pulse period
c. period
d. duration period - ANS period
which of the following sound wave is ultrasonic and least useful in diagnostic imaging?
a. 30 KHz
b. 8 MHz
c. 8,000 Hz
d. 3,000 kHz
e. 15 Hz - ANS 30 KHz
what is the frequency of a wave with 1 msec period?
a. 10,000 Hz
b. 1,000 kHz
c. 1 kHz
d. 1 MHz - ANS 1 kHz
_________ is the distance covered by on cycle
a. pulse length
b. wavelength
c. cycle distance
@COPYRIGHT ALL RIGHTS RESERVED PAGE 3 OF 51
, d. cycle duration - ANS wavelength
which of the following is determined by the source and medium?
a. frequency
b. period
c. propagation speed
d. range resolution - ANS range resolution
propagation speed = __________ x wavelength
a. pulse duration
b. period
c. number of cycles in the pulse
d. frequency - ANS frequency
As a result of ____ the propagation speed increases
a. increasing stiffness and increasing density
b. increasing stiffness and increasing elasticity
c. decreasing compressibility and decreasing density
d. decreasing stiffness and decreasing density - ANS decreasing compressibility and
decreasing density
Put in decreasing order of propagation speed
A) gas
B) liquid
C) solid - ANS solid
liquid
gas
@COPYRIGHT ALL RIGHTS RESERVED PAGE 4 OF 51
AND ANSWERS 100% PASS
The AIUM suggest:
A. Do not perform studies without reason
B. Do not prolong Studies without reason
C. Minimize exposure time (but perform and complete diagnostic exam)
D. Use minimum output power and highest receiver gain required to produce optimal images
(ALARA Principle)
E. All of the above - ANS All of the above
sound waves are:
A. electric
B. Mechanical, transverse
C. spectral
D. longitudinal, mechanical - ANS longitudinal, mechanical
The speed of US in soft tissue is closest to:
A. 1,540 km/sec
B. 1.54 km/msec
C. 1,500 m/s
D. 1,540 mm/sec - ANS 1,500 m/s
the frequency closest to the lower limit of US is:
@COPYRIGHT ALL RIGHTS RESERVED PAGE 1 OF 51
,A. 19,000 kHz
B. 10,000 MHz
C. 20,000 msec
D. 15, 000 Hz - ANS 15,000 Hz
which is not an acoustic variable?
A. density
B. pressure
C. distance
D. intensity - ANS intensity
The effects of soft tissue on US are called:
a. acoustic proliferation properties
b. dynamic effects
c. acoustic propagation properties
d. biologic effects - ANS acoustic propagation properties
All of the following are true EXCEPT
a. two waves with identical frequencies must interfere constructively
b. constructive interference is associated with waves that are in-phase
c. out-of-phase waves interfere destructively
d. waves of different frequencies may exhibit both constructive and destructive inference at
different times - ANS two waves with identical frequencies must interfere constructively
Put in decreasing order:
A. deca
B. deci
C. micro
@COPYRIGHT ALL RIGHTS RESERVED PAGE 2 OF 51
,D. centi - ANS deca
deci
centi
micro
______ is the time to complete one cycle
a. pulse duration
b. pulse period
c. period
d. duration period - ANS period
which of the following sound wave is ultrasonic and least useful in diagnostic imaging?
a. 30 KHz
b. 8 MHz
c. 8,000 Hz
d. 3,000 kHz
e. 15 Hz - ANS 30 KHz
what is the frequency of a wave with 1 msec period?
a. 10,000 Hz
b. 1,000 kHz
c. 1 kHz
d. 1 MHz - ANS 1 kHz
_________ is the distance covered by on cycle
a. pulse length
b. wavelength
c. cycle distance
@COPYRIGHT ALL RIGHTS RESERVED PAGE 3 OF 51
, d. cycle duration - ANS wavelength
which of the following is determined by the source and medium?
a. frequency
b. period
c. propagation speed
d. range resolution - ANS range resolution
propagation speed = __________ x wavelength
a. pulse duration
b. period
c. number of cycles in the pulse
d. frequency - ANS frequency
As a result of ____ the propagation speed increases
a. increasing stiffness and increasing density
b. increasing stiffness and increasing elasticity
c. decreasing compressibility and decreasing density
d. decreasing stiffness and decreasing density - ANS decreasing compressibility and
decreasing density
Put in decreasing order of propagation speed
A) gas
B) liquid
C) solid - ANS solid
liquid
gas
@COPYRIGHT ALL RIGHTS RESERVED PAGE 4 OF 51
