Final Jeopardy Physics final review

Question 1

Attenuation in soft tissue is due primarily to

Answer 1

absorption

Question 2

Which of the following pulsed imaging techniques demonstrates the highest acoustic output?

Answer 2

spectral-Doppler

Question 3

Plant studies are used primarily for

Answer 3

studying cavitational effects in living tissue

Question 4

Additional beams emitted from an array transducer, what do they produce or do?

Answer 4

duplicates structures laterally

Question 5

Aliasing does not occur in:

Answer 5

continuous wave Doppler

Question 6

Clutter is also known as

Answer 6

flash

Question 7

edge shadowing is the result of

Answer 7

refraction of the sound beam

Question 8

Enhancement of an echo results from a structure having _____ attenuation than the surrounding structures.

Answer 8

lower

Question 9

The Nyquist limit describes the:

Answer 9

the minimum number of samples required to avoid aliasing

Question 10

Which of the following artifacts can be helpful?
a. refraction
b. attenuation
c. propagation
d. reverberation

Answer 10

b

Question 11

Which of the following is a common and convenient way to reduce aliasing?
a.increasing transducer frequency
b. decreasing transducer frequency
c. shifting the baseline

Answer 11

c

Question 12

under sampling the Doppler shift is a cause of what?

Answer 12

aliasing

Question 13

which of the following artifacts that appears as a closely spaced reverberations

Answer 13

comet tail