The actual response of proton spin to an RF pulse is to
A) change the magnetic moment in a recovery circular motion.
B) change the magnetic moment in a precessing corkscrew motion.
C) remain stationary.
D) change the magnetic moment in a precessing circular motion.
Correct Answer:
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Q13: Each of the following is an example
Q14: The gradient coils determine the
A)section thickness.
B)resolution.
C)plane of
Q15: Protons will alternate from
A)parallel to antiparallel.
B)parallel to
Q16: The primary variable in the data collection
Q17: The time interval between pulse sequences
Q19: To produce magnetic field gradients in MRI,
Q20: The MHz frequency magnetic field for MRI
Q21: The basic principle of MR physics involves
Q22: Before performing an MR scan on a
Q23: MRI has been achieved with _ magnets.
A)resistive
B)permanent
C)superconductive
D)all
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