MRI Shimming Process
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MRI Shimming Process

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@AstonishingEveningPrimrose

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Questions and Answers

What is the purpose of shimming in the context of superconducting magnets?

  • To decrease the strength of the magnetic field
  • To increase the homogeneity of the magnetic field (correct)
  • To introduce irregularities in the magnetic field
  • To disrupt the functioning of the RF coils

    • Which type of coils are essential components for MRI systems to obtain clear images?

  • Superconducting Coils
  • Steel Coils
  • RF Coils (correct)
  • Passive Coils

    • How is active shimming different from passive shimming?

  • Active shimming uses additional magnetic fields, while passive shimming does not
  • Active shimming requires electric current adjustment, while passive shimming does not (correct)
  • Active shimming aims to decrease magnetic field homogeneity, while passive shimming increases it
  • Active shimming does not use coils, while passive shimming relies on coils

    • What is the primary function of RF coils in MRI scanners?

    <p>Receive and/or transmit RF signals</p> Signup and view all the answers

    Which type of coils are necessary for adjusting the static magnetic field homogeneity?

    <p>Coils with adjustable current</p> Signup and view all the answers

    What is the main role of RF coils in an MRI system?

    <p>Receiving and transmitting radiofrequency waves</p> Signup and view all the answers

    What is the purpose of shimming in MRI?

    <p>To improve the homogeneity of the static magnetic field</p> Signup and view all the answers

    Which statement best describes passive shimming?

    <p>It adds small pieces of iron or magnetized materials to adjust the magnetic field.</p> Signup and view all the answers

    What is active shimming in MRI characterized by?

    <p>Performing electrical adjustments with coils that have adjustable current.</p> Signup and view all the answers

    Why is it necessary to shim an MRI magnet?

    <p>To make the homogeneity of the static magnetic field more uniform</p> Signup and view all the answers

    Which method involves pieces of steel with good magnetic qualities in shimming?

    <p>Passive shimming</p> Signup and view all the answers

    What does shimming involve in terms of adjusting the magnetic field homogeneity?

    <p>Using mechanical and/or electrical adjustments</p> Signup and view all the answers

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