ARMRIT SG EXAM QUESTIONS AND
CORRECT ANSWERS. VERIFIED
2025/2026.
As magnetic field strength increases, precessional frequency.. - ANS increases
Which of the following characteristics determines if an atom is suitable for use in MRI? -
ANS odd mass number
A nucleus with a net spin is described as having which of the following? - ANS angular
momentum
The magnetic field strength created by the nuclear alignment of hydrogen, is known as which of
the following? - ANS NVM
Longitudinal magnetization occurs when protons align with which direction of the magnetic
field? - ANS Z
The direction of the main magnetic field is designated as which of the following? - ANS Z
The direction perpendicular to the main magnetic field is designated as which direction? -
ANS Y
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,The immediate decay of an F signal in the transverse plane after excitation is referred to as
which of the following? - ANS Free induction decay
The larmor equation - ANS w0 = y x B0
What is the time constant of the precessional frequency of a specific MR active nucleus at 1
tesla in units of Mhz/T? - ANS Gyromagnetic ratio
What is the approximate precessional frequency of hydrogen in a 3.0T magnet? - ANS 128
MHZ/T
Which of the following conditions is necessary for energy to be most efficiently transferred from
one system to another? - ANS Resonance
Which of the following conditions are necessary in order for resonance to occur? -
ANS Energy applied at the precise frequency
The application of RF pulse, causing resonance to occur is known as which of the following? -
ANS Excitation
T1 relaxation time is best described as recovery of? - ANS 63% longitudinal magnetization
Which of the following best describes T2 relaxation time? - ANS Decay of 63%
When placed in a strong magnetic field, protons of a water molecule will align in which of the
following directions of the magnet? - ANS Z
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What does a moving magnetic field induce in a conductor? - ANS Electrical current
|mage reconstruction in MRI is accomplished through which of the following mathematical
processes? - ANS Fast fourier transform
Materials with which of the following components have the highest degree of magnetic
susceptibility? - ANS Ferromagnetic
The center of K space corresponds to which gradient amplitude? - ANS O milli tesla/meter
Which of the following factors determines the number of lines in K space that must be filled
with data? - ANS Phase encoding
Which of the following provides the greatest signal to noise ratio? - ANS Steep gradient
slopes
In a 3D pulse sequence, slice encoding is accomplished by what method? - ANS Phase
encoding along the slice direction
Which of the following is not considered intrinsic contrast? - ANS Flip angle
What happens to T1 recovery times of tissues as the magnetic field increases? - ANS Increase
Which of the following has the longest T1 relaxation time? - ANS Cerebrospinal fluid
180 90 180 90 (PULSE SEQUENCE IMAGE) - ANS Inversion recovery
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
CORRECT ANSWERS. VERIFIED
2025/2026.
As magnetic field strength increases, precessional frequency.. - ANS increases
Which of the following characteristics determines if an atom is suitable for use in MRI? -
ANS odd mass number
A nucleus with a net spin is described as having which of the following? - ANS angular
momentum
The magnetic field strength created by the nuclear alignment of hydrogen, is known as which of
the following? - ANS NVM
Longitudinal magnetization occurs when protons align with which direction of the magnetic
field? - ANS Z
The direction of the main magnetic field is designated as which of the following? - ANS Z
The direction perpendicular to the main magnetic field is designated as which direction? -
ANS Y
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,The immediate decay of an F signal in the transverse plane after excitation is referred to as
which of the following? - ANS Free induction decay
The larmor equation - ANS w0 = y x B0
What is the time constant of the precessional frequency of a specific MR active nucleus at 1
tesla in units of Mhz/T? - ANS Gyromagnetic ratio
What is the approximate precessional frequency of hydrogen in a 3.0T magnet? - ANS 128
MHZ/T
Which of the following conditions is necessary for energy to be most efficiently transferred from
one system to another? - ANS Resonance
Which of the following conditions are necessary in order for resonance to occur? -
ANS Energy applied at the precise frequency
The application of RF pulse, causing resonance to occur is known as which of the following? -
ANS Excitation
T1 relaxation time is best described as recovery of? - ANS 63% longitudinal magnetization
Which of the following best describes T2 relaxation time? - ANS Decay of 63%
When placed in a strong magnetic field, protons of a water molecule will align in which of the
following directions of the magnet? - ANS Z
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What does a moving magnetic field induce in a conductor? - ANS Electrical current
|mage reconstruction in MRI is accomplished through which of the following mathematical
processes? - ANS Fast fourier transform
Materials with which of the following components have the highest degree of magnetic
susceptibility? - ANS Ferromagnetic
The center of K space corresponds to which gradient amplitude? - ANS O milli tesla/meter
Which of the following factors determines the number of lines in K space that must be filled
with data? - ANS Phase encoding
Which of the following provides the greatest signal to noise ratio? - ANS Steep gradient
slopes
In a 3D pulse sequence, slice encoding is accomplished by what method? - ANS Phase
encoding along the slice direction
Which of the following is not considered intrinsic contrast? - ANS Flip angle
What happens to T1 recovery times of tissues as the magnetic field increases? - ANS Increase
Which of the following has the longest T1 relaxation time? - ANS Cerebrospinal fluid
180 90 180 90 (PULSE SEQUENCE IMAGE) - ANS Inversion recovery
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
