URR mock Test 1 Questions With Correct
Answers.
Which of the following transducers will produce the highest frequency sound waves?
A. 6mm element thickness, 2mm/μs propagation speed of the element
B. 2mm element thickness, 6mm/μs propagation speed of the element
C. 6mm element thickness, 6mm...
Which of the following transducers will produce the highest frequency sound waves?
A. 6mm element thickness, 2mm/μs propagation speed of the element
B. 2mm element thickness, 6mm/μs propagation speed of the element
C. 6mm element thickness, 6mm/μs propagation speed of the element
D. 2mm element thickness, 2mm/μs propagation speed of the element - answer✔✔2mm element
thickness, 6mm/μs propagation speed of the element
The narrowest portion of a beam produced by a focused ultrasound transducer is:
A. the focal point
B. the Fresnel zone
C. the Fraunhofer zone
D. the first centimeter of the beam that leaves the transducer - answer✔✔the focal point
If a Doppler system is operating at a PRF of 5000/s what is the maximum Doppler frequency that
can be detected?
A. 2500kHz
B. 500kHz
C. 2.5kHz
D. 5kHz - answer✔✔2.5kHz
Why does Doppler tracing not touch the baseline on either side?
A. high filter settings
B. decreased Doppler gain settings
C. spectral broadening
D. decreased rejection settings - answer✔✔high filter settings
Which of the following statements correctly describes annular arrays?
A. an annular array can electronically focus the beam
B. an annular array can use phasing to electronically steer the beam
C. annular arrays provide the lowest slice thickness resolution
D. annular arrays usually contain 30 or more circular elements - answer✔✔an annular array can
electronically focus the beam
Which of the following describes the primary advantage of a 1.5D array over a 1D array?
A. the 1.5D array eliminates the need for a stand-off pad for superficial imaging
B. the 1.5D array can produce a trapezoid field of view while the 1D array can only produce a
rectangular field of view
C. the 1.5D array allows for 3D imaging while the 1D array does not
D. the 1.5D array allows for variable elevation focus while the 1D array has a fixed elevation
focus - answer✔✔the 1.5D array allows for variable elevation focus while the 1D array has a
fixed elevation focus
What wave parameter is defined as the wavelength times the number of cycles in the pulse?
A. period
B. spatial pulse length
C. pulse repetition frequency
D. pulse duration - answer✔✔spatial pulse length
You are scanning a thyroid gland with a 5cm wide linear array transducer. You are unable to
document the upper and lower poles in the same image to obtain a length measurement of the
gland. Which of the following techniques would assist in documenting the entire thyroid gland
on a single image?
A. spatial compounding
B. electronic focusing
C. 3D volume rendering
D. panoramic imaging - answer✔✔panoramic imaging
The average speed of sound in soft tissue is:
D. 1540cm/s - answer✔✔1540m/s
Which of the following is NOT the proper procedure for disinfection of instruments between
patients?
A. saniwipes or Cidex can be used to disinfect the transducer after each ultrasound exam
B. sonographers should wash their hands after each exam, even if gloves were used
C. all biopsy needles should be sent out for sterilization after each use
D. gel bottles should be sanitized daily using disinfectant cleanser - answer✔✔all biopsy needles
should be sent out for sterilization after each use
Which of the following correctly describes the color displayed on the image?
A. the color scale should be reduced so that the entire vessel is filled with blue color
B. the color scale should be reduced so that the entire vessel is filled with red color
C. the red and blue colors indicate that flow is moving in two different directions simultaneously
in the vessel
D. the heel-to-toe method can be used to change the course of the vessel across the image and
this will allow the vessel to accurately display a single color - answer✔✔the heel-to-toe method
can be used to change the course of the vessel across the image and this will allow the vessel to
accurately display a single color
What effect will increased hematocrit levels have on an arterial duplex exam?
A. hematocrit levels do not affect a Doppler evaluation
B. decreased blood viscosity
C. increased color flow display
D. decreased blood flow velocities - answer✔✔decreased blood flow velocities
When using a tissue phantom to evaluate range accuracy, what unit will be used to report the
measurement?
A. centimeter
B. micrometer
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