STUDY GUIDE ARMRIT EXAM QUESTIONS WITH
COMPLETE SOLUTIONS
In a spin echo pulse sequence, which of the following eliminates T2* effects by
| | | | | | | | | | | | | |
rephrasing the transverse magnetization and producing the echo? -
| | | | | | | | |
ANSWER✔✔✔-180-degree RF pulse | |
In a spin echo pulse sequence, a 180-degree RF refocusing pulse produces a
| | | | | | | | | | | | |
signal echo and... - ANSWER✔✔✔-Eliminates rephrasing due to magnetic field
| | | | | | | | | |
inhomogeneities
In an inversion recovery pulse sequence, the initial excitation pulse drives the
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longitudinal magnetization from +Z direction to which of the following directions?
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|- ANSWER✔✔✔--Z
|
Which of the following parameters will influence T1 contrast in a GRE pulse
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sequence? - 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? - ANSWER✔✔✔-180 radio
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frequency induced echoes | |
Which of the following is not an advantage of superconducting magnets? -
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ANSWER✔✔✔-Quick turn-off capability | |
, Superconducting magnet coils exhibit what type of resistance when operating at | | | | | | | | | | |
or below critical temperature? - ANSWER✔✔✔-Zero resistance
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In a permanent magnet design, which of the following best describes the
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direction of the main magnetic field? - ANSWER✔✔✔-Parallel to the long axis of
| | | | | | | | | | | | |
a body in the magnet.
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What is the cryogen in a superconducting magnet? - ANSWER✔✔✔-Liquid
| | | | | | | | | |
helium
Conductive copper windings that alter a main magnetic field along a strict
| | | | | | | | | | | |
coordinate are known as which of the following? - ANSWER✔✔✔-Gradient coils
| | | | | | | | | |
In an axial image, slice encoding is achieved through which of the following? -
| | | | | | | | | | | | | |
ANSWER✔✔✔-Z gradient |
Gradient coils are best described as which of the following? - ANSWER✔✔✔-
| | | | | | | | | | |
Shim coils that correct for homogeneity
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Which of the following best describes gradient slew rate? - ANSWER✔✔✔-Speed
| | | | | | | | | | |
and amplitude of a gradient measured in mT/m/s
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When using a receive-only surface coil, phased array coil, or multichannel coil,
| | | | | | | | | | | |
which of the following transmits the RF pulse to the patient's body? -
| | | | | | | | | | | | |
ANSWER✔✔✔-Body coil |
COMPLETE SOLUTIONS
In a spin echo pulse sequence, which of the following eliminates T2* effects by
| | | | | | | | | | | | | |
rephrasing the transverse magnetization and producing the echo? -
| | | | | | | | |
ANSWER✔✔✔-180-degree RF pulse | |
In a spin echo pulse sequence, a 180-degree RF refocusing pulse produces a
| | | | | | | | | | | | |
signal echo and... - 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?
| | | | | | | | | |
|- ANSWER✔✔✔--Z
|
Which of the following parameters will influence T1 contrast in a GRE pulse
| | | | | | | | | | | | |
sequence? - 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? - ANSWER✔✔✔-180 radio
| | | | | | | | | | | |
frequency induced echoes | |
Which of the following is not an advantage of superconducting magnets? -
| | | | | | | | | | | |
ANSWER✔✔✔-Quick turn-off capability | |
, Superconducting magnet coils exhibit what type of resistance when operating at | | | | | | | | | | |
or below critical temperature? - ANSWER✔✔✔-Zero resistance
| | | | | |
In a permanent magnet design, which of the following best describes the
| | | | | | | | | | | |
direction of the main magnetic field? - ANSWER✔✔✔-Parallel to the long axis of
| | | | | | | | | | | | |
a body in the magnet.
| | | |
What is the cryogen in a superconducting magnet? - ANSWER✔✔✔-Liquid
| | | | | | | | | |
helium
Conductive copper windings that alter a main magnetic field along a strict
| | | | | | | | | | | |
coordinate are known as which of the following? - ANSWER✔✔✔-Gradient coils
| | | | | | | | | |
In an axial image, slice encoding is achieved through which of the following? -
| | | | | | | | | | | | | |
ANSWER✔✔✔-Z gradient |
Gradient coils are best described as which of the following? - ANSWER✔✔✔-
| | | | | | | | | | |
Shim coils that correct for homogeneity
| | | | |
Which of the following best describes gradient slew rate? - ANSWER✔✔✔-Speed
| | | | | | | | | | |
and amplitude of a gradient measured in mT/m/s
| | | | | | |
When using a receive-only surface coil, phased array coil, or multichannel coil,
| | | | | | | | | | | |
which of the following transmits the RF pulse to the patient's body? -
| | | | | | | | | | | | |
ANSWER✔✔✔-Body coil |
