Term
| What type of flow is retrograded? |
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Definition
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Term
| What type of flow is antegraded? |
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Definition
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Term
| In what organs is high resistive flow normal? |
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Definition
| ECA, upper and lower extremities, and pre prandial SMA |
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Term
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Definition
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Term
| What are the three parts to a high resistive wave? |
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Definition
| 1. systolic peak 2. flow reversal 3. brief forward phase |
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Term
| When do extremities have low resistive waveforms? |
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Definition
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Term
| In what type of flow does blood accelerate and decelerate from cardiac contractions? |
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Definition
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Term
| In what type of flow does blood move with a variable velocity accelerated and decelerates from respiration? |
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Definition
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Term
| What type of flow is venous with held respiration? |
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Definition
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Term
| Type of flow in which streamlines are straight and parallel. |
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Definition
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Term
| What are the two types of laminar flow? |
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Definition
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Term
| In what type of laminar flow is the velocity profile relatively constant across the entire vessel, moving as a unit? |
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Definition
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Term
| What type of laminar flow has flow shaped like a parabola or a bullet across the vessel? |
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Definition
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Term
| What causes parabolic flow? |
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Definition
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Term
| Forward flow, but not always in a straight line. |
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Definition
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Term
| When fluid moves in a chaotic random course. |
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Definition
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Term
| How is energy converted in turbulent flow? |
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Definition
| as sound and vibrations (bruit and murmur) |
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Term
(difference) change in frequency or
wavelength of echo signals that occur when there is a relative motion between the transducer (sound source) and reflecting surface (red blood cells) |
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Definition
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Term
| What is the worst doppler angle? |
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Definition
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Term
| Result of going over the Nyquist limit. |
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Definition
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Term
| How do you correct aliasing artifact? |
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Definition
| increase PRF or velocity scale |
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Term
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Definition
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Term
| Measurements done mathmatically |
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Definition
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