Ultrasound Technology Quiz
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Questions and Answers

What does the transmit/receive switch direct during transmission?

  • Driving voltages from the pulser and pulse delays to the transducer (correct)
  • Return echo voltages from the transducer to the pulser
  • Echo voltages to the amplifiers
  • Pulse delays to the amplifiers

    • What is the purpose of amplifiers in ultrasound technology?

  • To transmit voltage pulses to the transducer
  • To compensate for the effect of noise on the image
  • To convert analog signals to digital form
  • To increase voltage amplitudes to suitable levels (correct)

    • What is called gain in the context of amplifiers?

  • The reduction of noise in the signal
  • The process of time gain compensation
  • The conversion of analog signals to digital form
  • The increase in voltage amplitudes (correct)

    • What is the purpose of time gain compensation (TGC)?

    <p>To equalize differences in received echo amplitudes</p> Signup and view all the answers

    Why do echoes from identical reflectors at different depths have different amplitudes?

    <p>Because of differences in travel distances and attenuation</p> Signup and view all the answers

    What does an analog-to-digital converter (ADC) do?

    <p>Converts voltage from analog to digital form</p> Signup and view all the answers

    What does the term 'analog' mean?

    <p>Proportional</p> Signup and view all the answers

    What happens to the echo signal as it travels farther from the transducer?

    <p>It becomes weaker due to attenuation</p> Signup and view all the answers

    What is the purpose of the pulser in ultrasound technology?

    <p>To generate voltage pulses for transmission</p> Signup and view all the answers

    What is the function of the transducer in ultrasound technology?

    <p>To transmit and receive voltage pulses</p> Signup and view all the answers

    What is the primary function of the transmit/receive switch?

    <p>To direct driving voltages to the transducer</p> Signup and view all the answers

    What happens to the echo signal as it travels farther from the transducer?

    <p>It becomes weaker due to attenuation</p> Signup and view all the answers

    What is the purpose of amplification in ultrasound technology?

    <p>To increase voltage amplitudes</p> Signup and view all the answers

    What is the effect of attenuation on the image?

    <p>It causes echoes from identical reflectors at different depths to have different amplitudes</p> Signup and view all the answers

    What is the purpose of time gain compensation (TGC)?

    <p>To equalize differences in received echo amplitudes caused by different reflector depths</p> Signup and view all the answers

    What is the function of the amplifiers in ultrasound technology?

    <p>To increase voltage amplitudes and compensate for attenuation</p> Signup and view all the answers

    What is the purpose of analog-to-digital converters (ADCs) in ultrasound technology?

    <p>To convert voltage from analog to digital form</p> Signup and view all the answers

    What is the term for the increase in voltage amplitudes?

    <p>Gain</p> Signup and view all the answers

    What happens to the echo signal as it travels back to the transducer?

    <p>It becomes weaker due to attenuation</p> Signup and view all the answers

    What is the purpose of the transducer in ultrasound technology?

    <p>To transmit and receive echo signals</p> Signup and view all the answers

    What is the primary function of the transmit/receive switch in ultrasound technology?

    <p>To direct the driving voltages and echo voltages</p> Signup and view all the answers

    What is the purpose of amplification in ultrasound technology?

    <p>To increase the voltage amplitudes</p> Signup and view all the answers

    What happens to the echo signal as it travels farther from the transducer?

    <p>It becomes weaker due to attenuation</p> Signup and view all the answers

    What is the purpose of time gain compensation (TGC) in ultrasound technology?

    <p>To equalize differences in received echo amplitudes caused by different reflector depths</p> Signup and view all the answers

    What is the function of analog-to-digital converters (ADCs) in ultrasound technology?

    <p>To convert analog voltage to digital form</p> Signup and view all the answers

    What is the effect of attenuation on the image?

    <p>It decreases the brightness of the image</p> Signup and view all the answers

    What is the purpose of pulse delays in ultrasound technology?

    <p>To delay the pulse transmission</p> Signup and view all the answers

    What is the result of amplification in ultrasound technology?

    <p>An increase in voltage amplitudes</p> Signup and view all the answers

    What happens to the echo signal as it travels back to the transducer?

    <p>It becomes weaker due to attenuation</p> Signup and view all the answers

    What is the purpose of the transducer in ultrasound technology?

    <p>To convert electrical energy into sound waves</p> Signup and view all the answers

    Study Notes

    Transmit/Receive (T/R) Switch

    • Directs driving voltages from pulser and pulse delays to transducer during transmission
    • Directs returning echo voltages from transducer to amplifiers during reception

    Amplifiers

    • Convert small voltages from transducer elements to larger ones suitable for further processing and storage
    • Increase voltage amplitudes, which is called gain
    • Gain is set subjectively to make echoes appear with appropriate brightnesses
    • Compensate for effect of attenuation on image through time gain compensation (TGC)
    • TGC equalizes differences in received echo amplitudes caused by different reflector depths

    Time Gain Compensation (TGC)

    • Reflectors with equal reflection coefficients produce echoes of unequal amplitudes if at different distances from transducer
    • TGC ensures echoes from identical reflectors at different depths have identical amplitudes
    • Compensates for attenuation effect on echoes from deeper reflectors

    Analog-to-Digital Converters (ADCs)

    • Convert analog voltage to digital form
    • Analog means "proportional", digital means "in the form of discrete numbers"

    Transmit/Receive (T/R) Switch

    • Directs driving voltages from pulser and pulse delays to transducer during transmission
    • Directs returning echo voltages from transducer to amplifiers during reception

    Amplifiers

    • Convert small voltages from transducer elements to larger ones suitable for further processing and storage
    • Increase voltage amplitudes, which is called gain
    • Gain is set subjectively to make echoes appear with appropriate brightnesses
    • Compensate for effect of attenuation on image through time gain compensation (TGC)
    • TGC equalizes differences in received echo amplitudes caused by different reflector depths

    Time Gain Compensation (TGC)

    • Reflectors with equal reflection coefficients produce echoes of unequal amplitudes if at different distances from transducer
    • TGC ensures echoes from identical reflectors at different depths have identical amplitudes
    • Compensates for attenuation effect on echoes from deeper reflectors

    Analog-to-Digital Converters (ADCs)

    • Convert analog voltage to digital form
    • Analog means "proportional", digital means "in the form of discrete numbers"

    Transmit/Receive (T/R) Switch

    • Directs driving voltages from pulser and pulse delays to transducer during transmission
    • Directs returning echo voltages from transducer to amplifiers during reception

    Amplifiers

    • Convert small voltages from transducer elements to larger ones suitable for further processing and storage
    • Increase voltage amplitudes, which is called gain
    • Gain is set subjectively to make echoes appear with appropriate brightnesses
    • Compensate for effect of attenuation on image through time gain compensation (TGC)
    • TGC equalizes differences in received echo amplitudes caused by different reflector depths

    Time Gain Compensation (TGC)

    • Reflectors with equal reflection coefficients produce echoes of unequal amplitudes if at different distances from transducer
    • TGC ensures echoes from identical reflectors at different depths have identical amplitudes
    • Compensates for attenuation effect on echoes from deeper reflectors

    Analog-to-Digital Converters (ADCs)

    • Convert analog voltage to digital form
    • Analog means "proportional", digital means "in the form of discrete numbers"

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    Related Documents

    Ultrasound Chapter 2 PDF

    Description

    This quiz covers the basics of ultrasound technology, including the transmit/receive switch and amplifiers.

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