Test Questions and
Complete Solutions
Graded A+
Denning [Date] [Course title]
,Sonographers should be aware of work-related musculoskeletal disorders. Best practice while scanning
is to avoid abducting the arm more than how many degrees?
a. 50
b. 90
c. 30
d. 40 - Answer: c. 30
Which action demonstrates best practice during ultrasound exams regarding the ALARA principle?
a. The exposure time should be extended during the exam.
b. use the lowest possible output power that provides a diagnostic image.
c. use the lowest possible gain.
d. Ensure that the time gain compensation (TGC is within acceptable limits. - Answer: b. use the lowest
possible output power that provides a diagnostic image
Which type of cavitation is the most concerning cause of bioeffects?
a. Transient
b. Absorption
c. Stable
d. Thermal - Answer: a. transient
Assuming an unfocused ultrasound beam, the American Institute of ultrasound in Medicine's "statement
on Mammalian Biological Effects of ultrasound In vivo" has confirmed that no bioeffects have been
noted when the spatial pulse temporal average (SPTA) intensity is less than which value?
a. 1 mW/cm2
b. 100 W/cm2
c. 1 W/cm2
d. 100 mW/cm2 - Answer: d. 100 mW/cm2
A sonographer notices that the mechanical index (MI) is too high during an ultrasound. What would be
the MOST appropriate modification that the sonographer can make?
, a. decrease receiver gain
b. increase period
c. decrease the output power
d. decrease the frequency of the transducer - Answer: c. decrease the output power
Select the technique that will generate the LEAST amount of exposure to the
patient.
a. Spectral Doppler
b. Color flow Doppler
c. Grayscale
d. M-mode - Answer: c. grayscale
When a vibrating string or fluid pump is used to test system performance,
what parameter is being tested?
a. Dead zone
b. Doppler velocities
c. Contrast resolution
d. Grayscale sensitivity - Answer: b. Doppler velocities
A tissue-equivalent phantom is used to ensure the efficiency of the
ultrasound machine. Choose the resolution that is NOT tested with this
phantom.
a. Temporal
b. Contrast
c. Axial
d. Horizontal - Answer: a. temporal
Which performance check describes the ability of the ultrasound machine
to correctly visualize signals that are weaker than others?