ARDMS Ultrasound Physics & Instrumentation Practice Exam Set Questions With 100% Correct Answers | Latest Update
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Ardms
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Ardms
ARDMS Ultrasound Physics &
Instrumentation Practice Exam
Exam Set Questions With 100%
Correct Answers | Latest Update
The change in the direction of the original sound wave
that occurs when sound interacts with two different tissue
types that have a different propagation speed is referred ...
ARDMS Ultrasound Physics &
Instrumentation Practice Exam
Exam Set Questions With 100%
Correct Answers | Latest Update
The change in the direction of the original sound wave
that occurs when sound interacts with two different tissue
types that have a different propagation speed is referred to
as: - ANSWER ✔ : Refraction
Refraction is the change in direction of the transmitted
sound beam that occurs with oblique incidence and
dissimilar propagation speeds.
Which of the following is an appropriate unit of
measurement for propagation speed? - ANSWER ✔ :
millimeters per microsecond (mm/μs)
The major component of attenuation is: - ANSWER ✔ :
Pulse repetition frequency
In clinical imaging, the wavelength measures between: -
ANSWER ✔ : 0.1 to 0.8 mm
, The duty factor for continuous wave ultrasound is: -
ANSWER ✔ : 100%
All of the following relate to the strength of the sound
wave except: - ANSWER ✔ : Wavelength
What is the change in intensity if the power decreases by
half? - ANSWER ✔ : Intensity is halved
Damping of the sound beam: - ANSWER ✔ : Reduces
the spatial pulse length
What is defined as the ability of the ultrasound system to
image structures that are positioned parallel to the sound
beam as separate structures? - ANSWER ✔ : Axial
resolution
What is defined as the beginning of one pulse to the
beginning of the next pulse, and therefore includes both
the "on" and "off" time? - ANSWER ✔ : Pulse repetition
period
The pulse repetition period is the time from the start of one
pulse to the start of the next pulse, and therefore, it
includes the "on" (or transmit) and "off" (or listening) times
What is pressure measured in? - ANSWER ✔ : pascals
or pounds per square inch
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