ARDMS SPI Exam Questions
and Verified Correct Answers
Which gain will increase the risk of bioeffects?
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
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
Which instrument control affects the amplitude (dB) of the outgoing signal:
a. gain
b. receiver gain
c. TGC
d. transmit gain
e. overall gain 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
b. fast Fourier transform
c. autocorrelation
d. time interval histogram answer - c. autocorrelation
b is incorrect because fast Fourier transform is the method used to process conventional
Doppler shift information but is too slow a method for color Doppler
Pulse repetition frequency answer - Number of pulses that an ultrasound system transmits into
the body each second. Hz. Typically 4-15 KHz. PRF and depth of a view are inversely related:
When system is imaging deeper, the pulse repetition frequency is lower.
Also the number of pulses created each second
and Verified Correct Answers
Which gain will increase the risk of bioeffects?
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
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
Which instrument control affects the amplitude (dB) of the outgoing signal:
a. gain
b. receiver gain
c. TGC
d. transmit gain
e. overall gain 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
b. fast Fourier transform
c. autocorrelation
d. time interval histogram answer - c. autocorrelation
b is incorrect because fast Fourier transform is the method used to process conventional
Doppler shift information but is too slow a method for color Doppler
Pulse repetition frequency answer - Number of pulses that an ultrasound system transmits into
the body each second. Hz. Typically 4-15 KHz. PRF and depth of a view are inversely related:
When system is imaging deeper, the pulse repetition frequency is lower.
Also the number of pulses created each second
