MRI Additional Magnetic Field Quiz
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Questions and Answers

What does the indication +Gz in Figure 29 mean?

  • A slightly stronger Bo field in the head compared to the iso-center (correct)
  • A stronger Bo field in the feet compared to the head
  • An equal Bo field intensity throughout the body
  • A slightly weaker Bo field in the head compared to the iso-center

    • Why do protons in the head spin faster than those in the iso-center?

  • Due to a weaker Bo field in the head
  • Due to a stronger Bo field in the head (correct)
  • Due to the presence of a gradient magnetic field in the z-direction
  • Due to an equal Bo field across the body

    • How does the choice of frequency range for RF excitation pulse impact imaging?

  • It changes the strength of the Bo field
  • It influences the direction of the gradient magnetic field
  • It determines the orientation of the MRI slices
  • It affects which section of the patient will generate an MRI signal (correct)

    • What is another term for selecting specific sections based on Larmor frequencies?

    <p>Slice-Selection</p> Signup and view all the answers

    Why can MRI slices be acquired at any angle or orientation in a patient?

    <p>As gradient magnetic fields can be applied in any orientation</p> Signup and view all the answers

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