URR mock test 1 All Possible Questions and Answers with complete solution
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URR
The main advantage of a curvilinear transducer over a vector transducer is:
A. the ability to perform CW Doppler with 2D imaging
B. the smaller footprint
C. the wider near field
D. the ability to scan at increased frame rates - the wider near field
Which of the following describes the primary ...
The main advantage of a curvilinear transducer over a vector transducer is:
A. the ability to perform CW Doppler with 2D imaging
B. the smaller footprint
C. the wider near field
D. the ability to scan at increased frame rates - the wider near field
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 -
the 1.5D array allows for variable elevation focus while the 1D array has a fixed elevation focus
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 - 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 - 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 - 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 - 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 - an annular array can electronically
focus the beam
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 - 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 - panoramic imaging
The average speed of sound in soft tissue is:
A. 1580m/s
B. 3300m/s
C. 1540m/s
D. 1540cm/s - 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 - 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 - 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
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