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14 Cards in this Set
- Front
- Back
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The shape of the footprint for a linear array transducer |
Flat |
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The harmonic frequency is blank the fundamental frequency |
Twice |
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Sound waves cannot travel in this |
A vacuum |
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This vibrates in response to an electrical pulse according to the pulse Echo principle |
The crystal |
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Strong Echoes return from this type of incidence |
Perpendicular |
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The transducer is responsible for converting electrical energy into what |
Sound |
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The region of the sound beam where the beam is relatively narrow |
Focus zone |
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In brightness mode the appearance of strong reflection on the display monitor |
Brighter |
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How many types of attinuations are there |
3 |
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In brightness mode, the appearance of week Reflections on the display monitor |
Dark |
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Two or more ultrasound modes being utilized at the same time |
Duplex |
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The strength of the returning Echo depends on the differences between this |
Tissue density |
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This biological media has the least acoustic impedance |
Air |
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A sector array transducer has this image shape |
Pie |
