Quiz 1

Question 1

Antegrade flow is defined as which of the following?

1. flow moving in the incorrect direction
2. flow directed toward the head
3. flow moving in the correct direction
4. flow directed toward the front of the body

Answer 1

flow moving in the correct direction

Question 2

True or False: Hemodynamics is the study of blood flow characteristics.

Answer 2

T

Question 3

Describe the difference between laminar and turbulent flow.

Answer 3

My Ans:

laminar - blood flow in parallel in a same direction. The fastest in the center and gets slower as it’s closer to the wall. parabolic shape profile

turbulent - blood flow in different directions with different velocities. It can be seen at the bulb, bifurcation, and stenotic vessels.

Question 4

Which best describes the spectral waveform demonstrated below?

Answer 4

triphasic

Question 5

!!! flag question

List 2 ways to better optimize this spectral waveform:

Answer 5

My Ans:

increase color scale to eliminate aliasing

move baseline down to show the full spectral Doppler waveform

*Both good suggestions, but only one is for optimizing the spectral waveform as requested by the question!

increase scale???

Question 6

Both good suggestions, but only one is for optimizing the spectral waveform as requested by the question!

Answer 6

My Ans:

acute - echolucent homogeneous appearance

chronic - calcific, echogenic appearance

*Acute is typically hypoechoic, dilated, soft, spongy, regular, may have flow around if loosely attached. Chronic is typically hyperechoic, may be atrophied, hard, irregular, likely to have flow through it.