STUDY GUIDE ARMRIT QUESTIONS WITH PASSED ANSWERS!!
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
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
