ARMRIT PRACTICE TESTS EXAM WITH
CORRECT QUESTIONS AND CORRECTLY
WELL DEFINED ANSWERS LATEST
ALREADY GRADED A+ 2025 – 2026
Which of the following best describes temporal resolution?
Time required to complete a single acquisition in a multi
acquisition pulse sequence
As voxel size decreases, how much is image quality
affected?
Lower resolution
Which of the following three parameters control the size of
voxel and image spatial resolution?
-Field of view (FOV)
-Matrix
-Slice thickness
As slice thickness increases, spatial resolution decreases due
to corresponding increases of which of the following?
Signal to noise ratio (SNR)
,As phase encoding steps increase, spatial resolution will
increase due to which of the following?
Voxels decrease in size
A linear relationship between frequency and position is
superimposed on Bo by the Gp (phase encoding gradient).
The Hydrogen protons relative precessional frequencies
determine
phase shifts
Combining a metal ion with a ligand reduces their tendency
to bind to proteins, enzymes, or membranes. The degree to
which they dissociate is a measure of their
toxicity
In a phase sequence employing 2DFT, the time can be
calculated using which formula
TR x NEX x Matrix
What pulse imaging technique is in all implementations of
MRA
gradient echo
What year was the first MRI enhancement agent approved
for clinical use
1988
Increasing NEX
Increase SNR and Resolution
,Inversion time, in an IR pulse sequence, is the time interval
between the
180 degree and 90 degree pulses
Increasing the matrix
increase resolution
A pulse sequence that replaces the second RF pulse with a
gradient magnetic field to rephase the transverse vector and
produce and echo is called
gradient echo
Increase FOV, TE, Slice thickness does
not affect scan time
In spatial localization which factor most affects slice
thickness and position
bandwidth and strength of Gs (slice select gradient)
The two types of enhancement media described by Lauffer,
the mechanism of T2 agents is
to decrease T2 relaxation time, thus emiting a high signal
A generation of phase differences along a particular
direction of a slice
phase encoding
Who described the mathematical method of converting a
time-varying signal into its frequency components which are
used to obtain positional information from the MR signal
, Jean Baptiste - Joseph Fourier
A generation of frequency differences along a particular
direction of a slice is called
frequency encoding
The 2 types of enhancement media described by Lauffer, the
mechanism of T1 agents is
to decrease T1 relaxation time, thus emitting high signal
An analogy for the decoding of the MR signal through
Fourier Transform
Basilar membrane processing sound
Logically each line of phase encoding data is combined to
allow the FT to determine the position along the y-axis. The
number of phase encoding steps determines
the number of pixels along the y-axis
In a gradient echo pulse sequence, which flip angle will
produce a T2 weighted gradient echo image.
>20 - <45 degree flip angle
In a horizontal magnet, what is the primary Gs (slice select
gradient) for an axial slice
Gz (axial slice)
In a horizontal field magnet what is the primary Gs (slice
select gradient) for a sagittal slice
CORRECT QUESTIONS AND CORRECTLY
WELL DEFINED ANSWERS LATEST
ALREADY GRADED A+ 2025 – 2026
Which of the following best describes temporal resolution?
Time required to complete a single acquisition in a multi
acquisition pulse sequence
As voxel size decreases, how much is image quality
affected?
Lower resolution
Which of the following three parameters control the size of
voxel and image spatial resolution?
-Field of view (FOV)
-Matrix
-Slice thickness
As slice thickness increases, spatial resolution decreases due
to corresponding increases of which of the following?
Signal to noise ratio (SNR)
,As phase encoding steps increase, spatial resolution will
increase due to which of the following?
Voxels decrease in size
A linear relationship between frequency and position is
superimposed on Bo by the Gp (phase encoding gradient).
The Hydrogen protons relative precessional frequencies
determine
phase shifts
Combining a metal ion with a ligand reduces their tendency
to bind to proteins, enzymes, or membranes. The degree to
which they dissociate is a measure of their
toxicity
In a phase sequence employing 2DFT, the time can be
calculated using which formula
TR x NEX x Matrix
What pulse imaging technique is in all implementations of
MRA
gradient echo
What year was the first MRI enhancement agent approved
for clinical use
1988
Increasing NEX
Increase SNR and Resolution
,Inversion time, in an IR pulse sequence, is the time interval
between the
180 degree and 90 degree pulses
Increasing the matrix
increase resolution
A pulse sequence that replaces the second RF pulse with a
gradient magnetic field to rephase the transverse vector and
produce and echo is called
gradient echo
Increase FOV, TE, Slice thickness does
not affect scan time
In spatial localization which factor most affects slice
thickness and position
bandwidth and strength of Gs (slice select gradient)
The two types of enhancement media described by Lauffer,
the mechanism of T2 agents is
to decrease T2 relaxation time, thus emiting a high signal
A generation of phase differences along a particular
direction of a slice
phase encoding
Who described the mathematical method of converting a
time-varying signal into its frequency components which are
used to obtain positional information from the MR signal
, Jean Baptiste - Joseph Fourier
A generation of frequency differences along a particular
direction of a slice is called
frequency encoding
The 2 types of enhancement media described by Lauffer, the
mechanism of T1 agents is
to decrease T1 relaxation time, thus emitting high signal
An analogy for the decoding of the MR signal through
Fourier Transform
Basilar membrane processing sound
Logically each line of phase encoding data is combined to
allow the FT to determine the position along the y-axis. The
number of phase encoding steps determines
the number of pixels along the y-axis
In a gradient echo pulse sequence, which flip angle will
produce a T2 weighted gradient echo image.
>20 - <45 degree flip angle
In a horizontal magnet, what is the primary Gs (slice select
gradient) for an axial slice
Gz (axial slice)
In a horizontal field magnet what is the primary Gs (slice
select gradient) for a sagittal slice
