ARMRIT practice tests questions with
correct answers
The 2 types of enhancement media described by Lauffer, the mechanism of
|| || || || || || || || || || || ||
T1 agents is - CORRECT ANSWER✔✔-to decrease T1 relaxation time, thus
|| || || || || || || || || || ||
emitting high signal || ||
An analogy for the decoding of the MR signal through Fourier Transform -
|| || || || || || || || || || || || ||
CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-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. - CORRECT ANSWER✔✔->20 - <45 degree flip
|| || || || || || || || || ||
angle
||
In a horizontal magnet, what is the primary Gs (slice select gradient) for an
|| || || || || || || || || || || || || ||
axial slice - CORRECT ANSWER✔✔-Gz (axial slice)
|| || || || || ||
A linear relationship between frequency and position is superimposed on Bo
|| || || || || || || || || || ||
by the Gp (phase encoding gradient). The Hydrogen protons relative
|| || || || || || || || || ||
precessional frequencies determine - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-toxicity
|| || || || ||
In a phase sequence employing 2DFT, the time can be calculated using which
|| || || || || || || || || || || ||
formula - CORRECT ANSWER✔✔-TR x NEX x Matrix
|| || || || || || || ||
What pulse imaging technique is in all implementations of MRA - CORRECT
|| || || || || || || || || || || ||
ANSWER✔✔-gradient echo ||
What year was the first MRI enhancement agent approved for clinical use -
|| || || || || || || || || || || || ||
CORRECT ANSWER✔✔-1988 ||
Increasing NEX - CORRECT ANSWER✔✔-Increase SNR and Resolution
|| || || || || || ||
Inversion time, in an IR pulse sequence, is the time interval between the -
|| || || || || || || || || || || || || ||
CORRECT ANSWER✔✔-180 degree and 90 degree pulses
|| || || || || ||
Increasing the matrix - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-gradient echo
|| || || ||
Increase FOV, TE, Slice thickness does - CORRECT ANSWER✔✔-not affect scan
|| || || || || || || || || ||
time
||
, In spatial localization which factor most affects slice thickness and position -
|| || || || || || || || || || || ||
CORRECT ANSWER✔✔-bandwidth and strength of Gs (slice select gradient)
|| || || || || || || ||
The two types of enhancement media described by Lauffer, the mechanism
|| || || || || || || || || || ||
of T2 agents is - CORRECT ANSWER✔✔-to decrease T2 relaxation time, thus
|| || || || || || || || || || || ||
emiting a high signal || || ||
A generation of phase differences along a particular direction of a slice -
|| || || || || || || || || || || || ||
CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-Jean Baptiste -
|| || || || || || || || || ||
Joseph Fourier ||
A generation of frequency differences along a particular direction of a slice is
|| || || || || || || || || || || ||
called - CORRECT ANSWER✔✔-frequency encoding
|| || || || ||
In a horizontal field magnet what is the primary Gs (slice select gradient) for
|| || || || || || || || || || || || ||
a sagittal slice - CORRECT ANSWER✔✔-Gx (sagittal slice)
|| || || || || || || ||
Pixel size formula - CORRECT ANSWER✔✔-FOV/Matrix
|| || || || ||
In an IR pulse sequence what will produce a STIR fat suppressed pulse
|| || || || || || || || || || || || ||
sequence - CORRECT ANSWER✔✔-IR of 80 - 120ms
|| || || || || || ||
correct answers
The 2 types of enhancement media described by Lauffer, the mechanism of
|| || || || || || || || || || || ||
T1 agents is - CORRECT ANSWER✔✔-to decrease T1 relaxation time, thus
|| || || || || || || || || || ||
emitting high signal || ||
An analogy for the decoding of the MR signal through Fourier Transform -
|| || || || || || || || || || || || ||
CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-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. - CORRECT ANSWER✔✔->20 - <45 degree flip
|| || || || || || || || || ||
angle
||
In a horizontal magnet, what is the primary Gs (slice select gradient) for an
|| || || || || || || || || || || || || ||
axial slice - CORRECT ANSWER✔✔-Gz (axial slice)
|| || || || || ||
A linear relationship between frequency and position is superimposed on Bo
|| || || || || || || || || || ||
by the Gp (phase encoding gradient). The Hydrogen protons relative
|| || || || || || || || || ||
precessional frequencies determine - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-toxicity
|| || || || ||
In a phase sequence employing 2DFT, the time can be calculated using which
|| || || || || || || || || || || ||
formula - CORRECT ANSWER✔✔-TR x NEX x Matrix
|| || || || || || || ||
What pulse imaging technique is in all implementations of MRA - CORRECT
|| || || || || || || || || || || ||
ANSWER✔✔-gradient echo ||
What year was the first MRI enhancement agent approved for clinical use -
|| || || || || || || || || || || || ||
CORRECT ANSWER✔✔-1988 ||
Increasing NEX - CORRECT ANSWER✔✔-Increase SNR and Resolution
|| || || || || || ||
Inversion time, in an IR pulse sequence, is the time interval between the -
|| || || || || || || || || || || || || ||
CORRECT ANSWER✔✔-180 degree and 90 degree pulses
|| || || || || ||
Increasing the matrix - CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-gradient echo
|| || || ||
Increase FOV, TE, Slice thickness does - CORRECT ANSWER✔✔-not affect scan
|| || || || || || || || || ||
time
||
, In spatial localization which factor most affects slice thickness and position -
|| || || || || || || || || || || ||
CORRECT ANSWER✔✔-bandwidth and strength of Gs (slice select gradient)
|| || || || || || || ||
The two types of enhancement media described by Lauffer, the mechanism
|| || || || || || || || || || ||
of T2 agents is - CORRECT ANSWER✔✔-to decrease T2 relaxation time, thus
|| || || || || || || || || || || ||
emiting a high signal || || ||
A generation of phase differences along a particular direction of a slice -
|| || || || || || || || || || || || ||
CORRECT ANSWER✔✔-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 - CORRECT ANSWER✔✔-Jean Baptiste -
|| || || || || || || || || ||
Joseph Fourier ||
A generation of frequency differences along a particular direction of a slice is
|| || || || || || || || || || || ||
called - CORRECT ANSWER✔✔-frequency encoding
|| || || || ||
In a horizontal field magnet what is the primary Gs (slice select gradient) for
|| || || || || || || || || || || || ||
a sagittal slice - CORRECT ANSWER✔✔-Gx (sagittal slice)
|| || || || || || || ||
Pixel size formula - CORRECT ANSWER✔✔-FOV/Matrix
|| || || || ||
In an IR pulse sequence what will produce a STIR fat suppressed pulse
|| || || || || || || || || || || || ||
sequence - CORRECT ANSWER✔✔-IR of 80 - 120ms
|| || || || || || ||
