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28 Cards in this Set
- Front
- Back
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Insulates the patient from electrical shock
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Case of Transducer
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Bonded to the back of the active element
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Backing Material or Damping element
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Constructed of metal or plastic
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case of transducer
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"uncouples" the internal components of the transducer from the case.
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Acoustic Insulator of probe
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Prevents electrical signals in the air from entering the transducer.
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Electrical Shield
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Prevents vibrations in the case from inducing electrical voltage in the PZT of transducer.
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Acoustic Insulator
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Protects the internal components of the transducer from damage.
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Case
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A thin barrier of cork or rubber on transducer.
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Acoustic Insulator
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Prevents electrical noise from penetrating the transducer
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Electrical Shield
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The dimensions of this affect how the beam is emitted from the transducer.
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PZT
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electrical connection btween the PZT and u/s system.
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wire
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In front of the PZT at "the face" of the transducer?
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Matching Layer
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Causes the creation of a vibration from the crystal to produce a ultrasonic wave.
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A Voltage
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Shaped like a coin inside the transducer.
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PZT or active element
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This component must be in contact with the PZT when electrical contact occurs during transmission.
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Wire
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1/2 Wavelength thick
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PZT or Active Element
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What protects the active element?
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The Matching layer.
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Increases the efficiency of sound energy transfer btwn the active element and body.
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Matching Layer
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What produces a voltage that must return to the system for processing of an image?
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The crystals vibration during reception.
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Made out of "epoxy resin" impregnated with Tungsten Filaments.
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Backing Material or Damping element
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Shortens the emitted sound pulse in duration and length.
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Backing Material or Damping element
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Is it true that the damping material reduces the efficiency of the transducer by shortening the pulse?
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Yes, this is true so increase the resolution of the image.
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1/4 wavelength thick
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The matching layer
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Reduces the ringing of the pulse
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Backing Material or Damping element
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Enhances Axial Resolution
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Backing Material or Damping element
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The thickest part of the transducer
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Backing Material or Damping element
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Bonded to the back of the active element.
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Backing Material or Damping element.
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Restricts PZT formation when there is an electrical spike.
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Backing Material or Damping element
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