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9 Cards in this Set
- Front
- Back
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When going from a medium of low velocity to high velocity, the wavelength?
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Increases
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Absorption of ultrasound in soft tissue.....as the frequency of the beam is increased?
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Increased
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Which of the following tissues has the highest rate of attenuation of the ultrasound wave?
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Liver
Fat Bone Lung 👍 |
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The conversion of an incident pressure wave to an electrical signal is the?
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Piezoelectric effect
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Grating lobes are caused by?
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Regular periodical spacing of crystal elements
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Electronic focusing in the transmit mode is accomplished using?
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Time delays to excite crystal elements
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Dynamic receive focusing uses?
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Delay lines after the echoes are detected in the crystal elements
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Aliasing is a potential problem in PW Doppler because of?
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Intermittent sampling
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The velocity limit in PW Doppler is dictated by the maximum Doppler shift detectable, which equals?
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One half the PRF
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