Sonography Principles and Instrumentation
Last Update Oct 15, 2025
Total Questions : 187
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Which describes the reflected frequency when a reflector is moving toward the sound source?
Which color Doppler control allows for reassignment of red and blue to represent flow direction?
What results from increasing the packet length when using color Doppler imaging?
Which adjustment will reduce the appearance of posterior shadowing artifact?
Which target group is used to evaluate transverse distance measurement accuracy in this tissue-mimicking phantom image?
What is the effect on the Doppler spectral waveform when sampling a vessel at a greater depth?
Which artifact occurs when there is increased amplification of reflectors distal to a low-attenuating structure?
What happens to the Doppler shift when the angle is changed from 30 to 60 degrees?
Which pulsed-wave Doppler adjustment would be appropriate to correct the aliasing seen in this image?
The ability to resolve two separate reflectors perpendicular to the path of the beam describes which type of resolution?
Which target group in this image of a tissue-mimicking phantom is used to evaluate axial resolution?
In this image, which characteristics of flow are represented by the upper right side of a variance mode color map?
What is required when interrogating higher blood velocities at angles closer to zero degrees?
Which spectral Doppler finding can occur when using a low pulse repetition frequency setting?
Which function should be decreased in order to minimize potential bioeffects?
How is an ultrasound image affected if several adjacent crystals of a linear array transducer are damaged?
During 3-D volume acquisition, the quality of the images is most dependent upon which factor?
What is the primary interaction that occurs when sound waves encounter a smooth, flat surface?
Which adjustment would reduce the noise in the Doppler waveform in this image?
Increasing which setting could enhance the visibility of acoustic shadowing posterior to a calcified object?
A Doppler shift is 10,000 Hz at an angle of flow of 60 degrees. What is the Doppler shift at 0 degrees?
How is the wavelength affected when switching from a 10 MHz transducer to a 5 MHz transducer?
Which system control adjusts amplification of signals as a function of depth?
Why is a higher frequency transducer a better choice for imaging superficial structures?
If the pulse repetition frequency is 3 kHz, what is the maximum Doppler shift that can be detected without aliasing?
The calipers in this image measure which performance characteristic of a system?
What sonographic artifact can result in a reflector that appears shallower than its true location?
TESTED 15 Oct 2025
