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ARDMS SPI Exam Questions and Answers, Exams of Radiology

University of Colorado - Denver (CU Denver)Radiology

A comprehensive overview of the ardms spi (sonography principles & instrumentation) exam, covering a wide range of topics related to ultrasound physics and instrumentation. It includes detailed explanations and answers to various exam questions, addressing concepts such as gain, doppler principles, transducer characteristics, image resolution, and more. The document aims to help sonography students and professionals prepare for the ardms spi exam by providing a thorough understanding of the underlying principles and practical applications of ultrasound technology. With its extensive coverage of exam-relevant content, this document can serve as a valuable study resource for those seeking to demonstrate their expertise in the field of sonography.

Typology: Exams

2024/2025

Available from 09/30/2024

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ARDMS SPI EXAM QUESTIONS WITH THE
LATEST SCORE.
Which gain will increase the risk of bioeffects?
a. transmit
b. receive
c. gain
d. overall gain - Correct Answer-a. transmit
Which of the following is considered the memory of an ultrasound
instrument?
a. pulser
b. transducer
c. receiver
d. beam former
e. digital scan converter
f. display monitor - Correct Answer-e. digital scan converter
Spectral broadening suggest:
a. laminar flow
b. turbulent flow
c. flow away from the transducer
d. flow towards the transducer - Correct Answer-b. turbulent flow
With pulse wave Doppler axial resolution: - Correct Answer-degrades
What color is usually use in color flow Doppler variance map to indicate
turbulent flow? - Correct Answer-green
Doppler high pass filter eliminates: - Correct Answer-high amplitude signals;
low velocity flow
The Doppler wall filter is considered a: - Correct Answer-high pass filter
The Nyquist Limit is equal to:
a. propagation speed x frequency
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ARDMS SPI EXAM QUESTIONS WITH THE

LATEST SCORE.

Which gain will increase the risk of bioeffects? a. transmit b. receive c. gain d. overall gain - Correct Answer-a. transmit Which of the following is considered the memory of an ultrasound instrument? a. pulser b. transducer c. receiver d. beam former e. digital scan converter f. display monitor - Correct Answer-e. digital scan converter Spectral broadening suggest: a. laminar flow b. turbulent flow c. flow away from the transducer d. flow towards the transducer - Correct Answer-b. turbulent flow With pulse wave Doppler axial resolution: - Correct Answer-degrades What color is usually use in color flow Doppler variance map to indicate turbulent flow? - Correct Answer-green Doppler high pass filter eliminates: - Correct Answer-high amplitude signals; low velocity flow The Doppler wall filter is considered a: - Correct Answer-high pass filter The Nyquist Limit is equal to: a. propagation speed x frequency

b. propagation speed/ wavelength c. PRF/ d. 4xV^2 - Correct Answer-c. PRF/ Multiple echoes, equally spaced originating from a gas bubble is called: a. comet tail b. ring down c. slice thickness artifact d. multipath - Correct Answer-b. ring down An increase in red blood cell velocity will_____ the Doppler Shift: a. increase b. decrease c. not change d. cannot be predicted - Correct Answer-a. increase The primary advantage of CW Doppler is: a. range resolution b. range discrimination c. range ambiguity d. range gating e. absence of sampling rate - Correct Answer-e. absence of sampling rate The range for ultrasound begins: a. 20 Hz b. 20,000 Hz c. 2 MHz d. 15 MHz - Correct Answer-b. 20,000 Hz (useful frequency range for clinical imaging is 2MHz-10MHz) Which instrument control affects the amplitude (dB) of the outgoing signal: a. gain b. receiver gain c. TGC d. transmit gain e. overall gain - Correct Answer-d. transmit gain; amplitude can be affected by the sonographer Which of the following is used to convert Doppler shift information into color: a. high PRF

Clinical imaging transducers are: - Correct Answer-wide bandwidth; low q factor Power/area= - Correct Answer-Intensity Increasing wavelength will ___________ frequency. a. increase b. decrease c. not change d. cannot be predicted. - Correct Answer-b. decrease All of the following directly affect frame rate except: a. depth of penetration b. field of view c. number of focuses d. line density e. beam width - Correct Answer-e. beam width A reflection will occur at the boundary of two media if the acoustic impedences of the two media are: a. equal b. different c. unchanged d. cannot be predicted - Correct Answer-b. different A mechanical transducer utilizes: a. transmit focus b. receive focus c. fixed focus d. dynamic aperture focusing - Correct Answer-c. fixed focus; sonographer cannot determine the location of # of foci. mechanical transducer uses cross sectional imaging, rotating wheel, wobbler, oscillating mirror The transducer frequency is primarily determined by the transducer element: a. diameter b. thickness c. propagation speed d. type - Correct Answer-b. thickness

A strongly focused transducer implies a: a. short focal length; decreased beam divergence b. medium focal length; increased beam divergence c. long focal length; no beam divergence d. short focal length; increased beam divergence - Correct Answer-d. short focal length; increased beam divergence B-mode displays reflector: a. amplitude and distance b. amplitude and velocity c. power and direction d. depth and speed - Correct Answer-a. amplitude and distance An increase in the number of pixels on the display will improve: - Correct Answer-detail resolution Propagation speed is determined by: a. frequency b. harmonics c. bandwidth d. bulk modulus - Correct Answer-d. bulk modulus Increasing transmit gain increases everything except: - Correct Answer- frequency The correct depth placement of reflectors depends primarily upon: a. frequency b. period c. power d. propagation speed - Correct Answer-d. propagation speed Which of the following will increase the color flow jet area displayed? a. increase color gain b. increase velocity scale c. increase frequency - Correct Answer-a. increase color gain Increasing propagation speed: - Correct Answer-air, soft tissue, bone The most common type of transducer used in echo is: - Correct Answer- sector phased array

There have been no proven biological effects for unfocused transducers for intensities below: - Correct Answer-100mW/cm2 SPTA The primary cause of attenuation of ultrasound in soft tissue is caused by: - Correct Answer-absorption Resolution artifact - Correct Answer-When two structures parallel to the ultrasound beam are displayed as one reflector. Damping does not decrease: - Correct Answer-bandwidth Spectral Broadening - Correct Answer-The widening of the doppler shift spectrum. Meaning the increase of the range of doppler shift frequencies present, owing to a broader range of flow speeds encountered by the sound beam. Refraction - Correct Answer-Change in direction of a wave when it changs speed as in travels from one material to another. The change in the direction of sound as it crosses a boundary. autocorrelation - Correct Answer-used to convert Doppler shift information into color. PRF - Correct Answer-Pulse Repetition Frequency. The rate at which pulses are transmitted, given in hertz or pulses per second; reciprocal of pulse- repetition time. Period - Correct Answer-the time per cycle 1-10usec Period Calculation - Correct Answer-1/frequency 1/5MHz=. How do you decrease period? - Correct Answer-Increase frequency Impedance - Correct Answer-the opposition of sound propagation The unit for impedance? - Correct Answer-Rayls