EDELMAN UNDERSTANDING
ULTRASOUND PHYSICS EXAM REVIEW
2026 ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
Which of the following determines the spatial resolution of an
image on a monitor?
a. Strength of the electron beam
b. Form of phosphor coating of the screen
c. Number of lines of the monitor's display
d. The pulse duration - correct answer-Number of lines of the
monitor's display
What is the cause of acoustic speckle?
a. Refraction
b. Attenuation
c. Interference of tiny acoustic wavelets
d. Resonance of particles in the near field - correct answer-
Interference of tiny acoustic wavelets
What is true of acoustic speckle?
,a. Its effects are mild and it tends to slightly degrade images
b. It is a rare artifact that does not occur in real-time imaging
c. Its effects are dramatic
d. It is eliminated with apolarization - correct answer-Its effects
are mild and it tends to slightly degrade images
True or false? Quality assurance evaluations of ultrasound
systems should be performed weekly? - correct answer-False
True or false? Quality assurance evaluations of ultrasound
systems can only be performed by biomedical engineers or
physical scientists. - correct answer-False
True or false? Proper quality assurance programs require the
assessment of every transducer used in the clinical laboratory. -
correct answer-True
Which of the following statements are true of a tissue
equivalent phantom? (More than one answer may be correct.)
a. It has the same propagation speed as that of soft tissue
b. It attenuates ultrasound at a rate similar to soft tissue
c. Embedded in it are solid masses and cystic structures
,d. It is the device of choice for quality assurance studies -
correct answer-All of the above
All of the following may be used to evaluate Doppler systems
except :
a. Tissue equivalent phantom
b. Moving belt phantom
c. Vibrating string phantom
d. Doppler phantom - correct answer-Tissue equivalent
phantom
Which modes of Doppler may be assessed with a Doppler
phantom?
a. Color flow Doppler
b. Pulsed Doppler
c. Power mode Doppler
d. Continuous wave Doppler
e. All of the above - correct answer-All of the above
Which of the following devices convert ultrasound energy into
heat?
a. A calorimeter
, b. A thermocouple
c. A hydrophone
d. A Schlieren - correct answer-A calorimeter and a
thermocouple
The ________ measures beam intensity at specific locations,
whereas a ___________ measures the entire energy in a
sound beam.
a. Calorimeter, thermocouple
b. Schlieren, thermocouple
c. Thermocouple, calorimeter
d. Thermometer, hydrometer - correct answer-Thermocouple,
calorimeter
True or false? The biological effects of ultrasound are thought
to be negligible and thus, few investigations have been
performed on the subject. - correct answer-False
True or false? It is generally believed that the effects of
ultrasound on biologic media are minimal. - correct answer-
False
ULTRASOUND PHYSICS EXAM REVIEW
2026 ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
Which of the following determines the spatial resolution of an
image on a monitor?
a. Strength of the electron beam
b. Form of phosphor coating of the screen
c. Number of lines of the monitor's display
d. The pulse duration - correct answer-Number of lines of the
monitor's display
What is the cause of acoustic speckle?
a. Refraction
b. Attenuation
c. Interference of tiny acoustic wavelets
d. Resonance of particles in the near field - correct answer-
Interference of tiny acoustic wavelets
What is true of acoustic speckle?
,a. Its effects are mild and it tends to slightly degrade images
b. It is a rare artifact that does not occur in real-time imaging
c. Its effects are dramatic
d. It is eliminated with apolarization - correct answer-Its effects
are mild and it tends to slightly degrade images
True or false? Quality assurance evaluations of ultrasound
systems should be performed weekly? - correct answer-False
True or false? Quality assurance evaluations of ultrasound
systems can only be performed by biomedical engineers or
physical scientists. - correct answer-False
True or false? Proper quality assurance programs require the
assessment of every transducer used in the clinical laboratory. -
correct answer-True
Which of the following statements are true of a tissue
equivalent phantom? (More than one answer may be correct.)
a. It has the same propagation speed as that of soft tissue
b. It attenuates ultrasound at a rate similar to soft tissue
c. Embedded in it are solid masses and cystic structures
,d. It is the device of choice for quality assurance studies -
correct answer-All of the above
All of the following may be used to evaluate Doppler systems
except :
a. Tissue equivalent phantom
b. Moving belt phantom
c. Vibrating string phantom
d. Doppler phantom - correct answer-Tissue equivalent
phantom
Which modes of Doppler may be assessed with a Doppler
phantom?
a. Color flow Doppler
b. Pulsed Doppler
c. Power mode Doppler
d. Continuous wave Doppler
e. All of the above - correct answer-All of the above
Which of the following devices convert ultrasound energy into
heat?
a. A calorimeter
, b. A thermocouple
c. A hydrophone
d. A Schlieren - correct answer-A calorimeter and a
thermocouple
The ________ measures beam intensity at specific locations,
whereas a ___________ measures the entire energy in a
sound beam.
a. Calorimeter, thermocouple
b. Schlieren, thermocouple
c. Thermocouple, calorimeter
d. Thermometer, hydrometer - correct answer-Thermocouple,
calorimeter
True or false? The biological effects of ultrasound are thought
to be negligible and thus, few investigations have been
performed on the subject. - correct answer-False
True or false? It is generally believed that the effects of
ultrasound on biologic media are minimal. - correct answer-
False
