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ARDMS OBGYN REGISTRY EXAM REVIEW WITH COMPLETE QUESTIONS AND CORRECT ANSWERS
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ARDMS OBGYN REGISTRY EXAM REVIEW WITH COMPLETE QUESTIONS AND CORRECT ANSWERS
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ARDMS- SPI EXAM WITH COMPLETEQUESTIONS AND CORRECT ANSWERS
GRADED A+
List all these metric terms in increasing order:
A. mega
B. micro
C. milli
D. hecto
E. deca
F. deci Correct Answer micro, milli, deci, deca, hecto, mega
List all these metric terms in decreasing order:
A. nano
B. canti
C. giga
D. kilo
E. hecto
F. micro Correct Answer giga, kilo,hecto, centi, micro, nano
Sound pulses travel through biologic tissue, or ______. Correct
Answer Media
All waves carry _____ from one location to another. Correct
Answer Energy
Sound is a __________ wave in which particles in the medium
move. Correct Answer Mechanical
Sound cannot travel through a ______; it must travel through a
______. Correct Answer Vacuum, medium
,What does compressed mean? Correct Answer Squeezed
together
What does rarefied mean? Correct Answer Stretched apart
Sound travels in a ________ line. Correct Answer Straight
Sound waves are ____________ waves. Correct Answer
Longitudinal
What is the propagation speed dependent on? Correct Answer
The medium
Are there any biologic effects on tissue? Correct Answer No
Sound waves are identified by Correct Answer Oscillations in
acoustic variables
What are the three acoustic variables? (With their units) Correct
Answer pressure - pascals (Pa), density - kg/cm^3, distance -
cm, mm
If something other than pressure, density, or distance (particle
motion) rhythmically oscillates in a wave, then the wave... Correct
Answer Is not a sound wave
Sound waves are also known as Correct Answer Acoustic waves
What are the seven Acoustic Parameters? Correct Answer
Period, frequency, amplitude, power, intensity, wavelength,
propagation speed
Particles move in a direction that is perpendicular to the direction
that the wave propagates in what wave? Correct Answer
Transverse wave
,Particles move in the same direction that the wave propagates in
a ____________ wave. Correct Answer Longitudinal
When are a pair of waves considered in-phase? Correct Answer
When their peaks and troughs occur at the same time and at the
same location
Considered "in step"
What happens when two waves are out-of-phase? Correct
Answer Their peaks occur at different times, and so do their
troughs
"out of step"
What is interference? Correct Answer When more than one
beam travels in a medium and arrive at the same location at
exactly the same time
These waves lose their individual characteristics and combine to
form a single wave
The interference of in-phase waves results in a single wave of
_________ amplitude. This is called ___________. Correct
Answer Greater, constructive interference
(Larger Wave)
The interference of a pair of out-of-phase waves results in the
formation of a single wave of _____ amplitude. This combination
is called _____________________. Correct Answer Lesser,
destructive interference
(Smaller Wave)
When frequencies of waves differ, what kind of wave occurs?
Correct Answer Both constructive and destructive interference
, What do waves transfer from one location to another? Correct
Answer Energy
Two waves are traveling in a medium and arrive at a location at
the same time. What event takes place? Correct Answer
Interference
Which types of waves will exhibit both constructive and
destructive interference? Correct Answer Waves of different
frequency
What units are used to report the pressure of a sound beam?
Correct Answer Pascals, Pa
What describes features of a sound wave? Correct Answer
Parameters
What is the source of a sound wave? Correct Answer The
ultrasound system and the transducer
Some parameters are determined by the tissue through which the
sound is traveling, also called a __________. Correct Answer
Medium
What is period? And what is it determined by? Correct Answer
The time it takes a wave to vibrate a single cycle, or the time from
start of a cycle to the start of the next cycle
It is determined by the source
What is frequency? And what is it determined by? Correct Answer
The number of cycles that occurs in one second
Determined by the sound source only
1 cycle/second = Correct Answer 1 Hertz
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