STUDY GUIDE ARMRIT Exam with verified detailed || || || || || || ||
solutions
In a spin echo pulse sequence, which of the following eliminates T2* effects by rephrasing
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the transverse magnetization and producing the echo? - correct answer✔✔180-degree RF
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pulse
In a spin echo pulse sequence, a 180-degree RF refocusing pulse produces a signal echo
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and... - correct answer✔✔Eliminates rephrasing due to magnetic field inhomogeneities
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In an inversion recovery pulse sequence, the initial excitation pulse drives the longitudinal
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magnetization from +Z direction to which of the following directions? - correct answer✔✔-
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Z
Which of the following parameters will influence T1 contrast in a GRE pulse sequence? -
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correct answer✔✔Flip angle || ||
In a fast(Turbo) spin echo pulse sequence, the initial slice excitation pulse is followed by a
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series of which of the following? - correct answer✔✔180 radio frequency induced echoes
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Which of the following is not an advantage of superconducting magnets? - correct
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answer✔✔Quick turn-off capability || ||
Superconducting magnet coils exhibit what type of resistance when operating at or below
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critical temperature? - correct answer✔✔Zero resistance
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In a permanent magnet design, which of the following best describes the direction of the
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main magnetic field? - correct answer✔✔Parallel to the long axis of a body in the magnet.
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solutions
In a spin echo pulse sequence, which of the following eliminates T2* effects by rephrasing
|| || || || || || || || || || || || || || ||
the transverse magnetization and producing the echo? - correct answer✔✔180-degree RF
|| || || || || || || || || || ||
pulse
In a spin echo pulse sequence, a 180-degree RF refocusing pulse produces a signal echo
|| || || || || || || || || || || || || || ||
and... - correct answer✔✔Eliminates rephrasing due to magnetic field inhomogeneities
|| || || || || || || || ||
In an inversion recovery pulse sequence, the initial excitation pulse drives the longitudinal
|| || || || || || || || || || || || ||
magnetization from +Z direction to which of the following directions? - correct answer✔✔-
|| || || || || || || || || || || ||
Z
Which of the following parameters will influence T1 contrast in a GRE pulse sequence? -
|| || || || || || || || || || || || || || ||
correct answer✔✔Flip angle || ||
In a fast(Turbo) spin echo pulse sequence, the initial slice excitation pulse is followed by a
|| || || || || || || || || || || || || || || ||
series of which of the following? - correct answer✔✔180 radio frequency induced echoes
|| || || || || || || || || || || ||
Which of the following is not an advantage of superconducting magnets? - correct
|| || || || || || || || || || || || ||
answer✔✔Quick turn-off capability || ||
Superconducting magnet coils exhibit what type of resistance when operating at or below
|| || || || || || || || || || || || ||
critical temperature? - correct answer✔✔Zero resistance
|| || || || ||
In a permanent magnet design, which of the following best describes the direction of the
|| || || || || || || || || || || || || || ||
main magnetic field? - correct answer✔✔Parallel to the long axis of a body in the magnet.
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