ARDMS SPI Exam 2025
150 Real Questions and Correct Answers
Complete Ultrasound Physics Review
Which gain will increase the risk of bio effects?
a. transmit
b. receive
c. gain
d. overall gain
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
ANSWER: e. digital scan converter
Spectral broadening suggest:
a. laminar flow
b. turbulent flow
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c. flow away from the transducer
d. flow towards the transducer
ANSWER: b. turbulent flow
With pulse wave Doppler axial resolution:
ANSWER: degrades
What color is usually use in color flow Doppler variance map to indicate turbulent
flow? ANSWER: green
Doppler high pass filter eliminates:
ANSWER: high amplitude signals; low velocity flow
The Nyquist Limit is equal to:
a. propagation speed x frequency
b. propagation speed/ wavelength
c. PRF/2
d. 4xV^2
ANSWER: c. PRF/2
Multiple echoes, equally spaced originating from a gas bubble is called: