Edelman SPI Practice Exam With verified
Questions And 100% Correct Detailed Answers
What determines the intensity of an ultrasound beam after
it has traveled through the body?
A. the sound waves source
B. the medium through which the sound travels
C. both A and B
D. neither A nor B - ANSWER-C. both A and B
What are the units of the transmitted intensity of a sound
wave?
A. W/cm^2
B. watts
, C. dB
D. none - ANSWER-A. W/cm^2
What happens when the power in an ultrasound beam is
unchanged, and at the same time, the beam area
doubles?
A. doubles
B. is halved
C. is quartered
D. remains the same - ANSWER-B. is halved
What happens to an acoustic beam's intensity when the
power in the beam increases by 25% while the cross-
sectional area of the beam remains the same?