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Questions and Answers
What does the indication +Gz in Figure 29 mean?
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?
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?
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?
What is another term for selecting specific sections based on Larmor frequencies?
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Why can MRI slices be acquired at any angle or orientation in a patient?
Why can MRI slices be acquired at any angle or orientation in a patient?
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