ARMRIT MRI Physics Exam 2025–2026
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What role do the protons that are aligned antiparallel to the main magnetic field play?
A. They contribute to signal for image detail and contrast
B. They do not contribute to signal
C. They contribute most of the signal
D. Their high energy signal appears in the outer area of k-space - answer>>>B. They do not contribute to
signal
How is the effect of magnetic field inhomogeneity on FID best expressed?
A. T1 relaxation time
B. T2 decay time
C. T2* decay - answer>>>C. T2* decay
What is the ligand in gadopenetate dimeglumine (Gd-DTPA)?
A. Gadolinium
B.DTPA
C. DO3A
D. Diamagnetic - answer>>>B. DTPA
Which of the following best depicts the rotating frame of reference used to simplify the complex motion
of precessing spins?
A. Mz
B. Bo
C. B1
D. May - answer>>>C. B1
,Which statement is correct regarding the RF cable positioning?
A. RF cables can be looped safely
B. RF cables can touch the patient's skin
C. It is acceptable to place a blanket over the patient and the RF cable
D. It is advised to position the RF cable to exit the centre of the bore - answer>>>D. It is advised to
position the RF cable to exit the centre of the bore
During a pulse sequence, RF excitation occurs prior to the slice selection.
True or False - answer>>>False
During a spin echo pulse sequence, the application of the slice select gradient occurs at the same time as
the:
A. RF excitation pulse
B. Fréquence Encoding
C.RF rephrasing pulses
D. RF excitation pulse and RF rephrasing pulse - answer>>>D. RF excitation and RF rephrasing pulses
During a gradient echo pulse sequence, the application of the slice select gradient occurs at the same
time as the:
A. RF excitation pulse
B. Fréquence Encoding
C.RF rephrasing pulses
D. RF excitation pulse and RF rephrasing pulse - answer>>>A. RF excitation pulse
During a gradient echo pulse sequence, a (Blank) is used after the application of an alpha pulse in order
to rephrase dephasing hydrogen protons.
A. Gradient Pulse
B. 180 degree RF pulse
C. 90 degree RF pulse
D. Variable degree RF pulse - answer>>>A. Gradient Pulse
,During a SE pulse sequence, the time between the 90 degree alpha pulse and the 180 degree rephrasing
pulse is called the?
A. TE
B. TR
C. TI
D. TAU (1/2 TE) - answer>>>D. TAU (1/2 TE)
What are types of spin Echo pulses? - answer>>>-Conventional Spin echo pulse sequences
- Fast spin echo pulse sequences
-Inversion recovery pulse sequences (IR)
Which of the following sets of parameters would likely provide the best T1 image weighting when a CSE
pulse sequence is applied?
A. 150 ms TR, 5 ms TE
B. 450 ms TR, 20 ms TE
C. 900 ms TR, 60 ms TE
D. 400 ms TR, 80 ms TE - answer>>>B. 450 ms TR, 20 ms TE
Which of the following sets of parameters would likely provide the best Proton Density image weighting
when a CSE pulse sequence is applied?
A. 2000 ms TR, 80 ms TE
B. 2200 ms TR, 20 ms TE
C. 100 ms TR, 20ms TE
D. 2200ms TR, 50 ms TE - answer>>>B. 2200 ms TR, 20 ms TE
Which of the following sets of parameters would likely provide the best T1 image weighting when a CSE
pulse sequence is applied?
A. 100-500 ms TR, 5-10 ms TE
B. 300-120 ms TR, 10-100 ms TE
C. 300-700 ms TR, 10-30 ms TE
D. 500-2000 ms TR, ms TE - answer>>>C. 300-700 ms TR, 10-30 ms TE
, Which of the following sets of parameters would likely provide the best T1 image weighting when a CSE
pulse sequence is applied?
A. 300-700 ms TR, 10-30 ms TE
B. 2000+ ms TR, 50+ ms TE
C. 2000+ms TR, 10-30 ms TE
D. 500-700 ms TR, 80+ms TE - answer>>>C. 2000+ms TR, 10-30 ms TE
Fast spin echo pulse sequences are a (Blank) to determine which sampled echos will contribute to image
contrast, and which will contribute to spatial resolution.
A. Effective TE
B. TR
C. Small FOV
D. Scan time - answer>>>A. Effective TE
When applying a fast spin echo pulse sequence, how many lines of k-space are filled per TR period?
A. 2 or less
B. 2 or more
C. 1
D. All lines are filled per TR period - answer>>>B. 2 or more
As ETL increases, more T2 weighting occurs (True or False) - answer>>>True
During FSE sequences, which parameter determines whether sampled data gets stored in the centre of
the periphery of k-space?
A. TR
B. Effective TE
C. Effective TR
D. Sat TR - answer>>>B. Effective TE
What is an advantage of applying fast spin echo pulse sequences (FSE)?
A. Magnetic susceptibility artifact decreases
Accurate Real Exam Questions and Verified
Correct Answers JUST RELEASED
What role do the protons that are aligned antiparallel to the main magnetic field play?
A. They contribute to signal for image detail and contrast
B. They do not contribute to signal
C. They contribute most of the signal
D. Their high energy signal appears in the outer area of k-space - answer>>>B. They do not contribute to
signal
How is the effect of magnetic field inhomogeneity on FID best expressed?
A. T1 relaxation time
B. T2 decay time
C. T2* decay - answer>>>C. T2* decay
What is the ligand in gadopenetate dimeglumine (Gd-DTPA)?
A. Gadolinium
B.DTPA
C. DO3A
D. Diamagnetic - answer>>>B. DTPA
Which of the following best depicts the rotating frame of reference used to simplify the complex motion
of precessing spins?
A. Mz
B. Bo
C. B1
D. May - answer>>>C. B1
,Which statement is correct regarding the RF cable positioning?
A. RF cables can be looped safely
B. RF cables can touch the patient's skin
C. It is acceptable to place a blanket over the patient and the RF cable
D. It is advised to position the RF cable to exit the centre of the bore - answer>>>D. It is advised to
position the RF cable to exit the centre of the bore
During a pulse sequence, RF excitation occurs prior to the slice selection.
True or False - answer>>>False
During a spin echo pulse sequence, the application of the slice select gradient occurs at the same time as
the:
A. RF excitation pulse
B. Fréquence Encoding
C.RF rephrasing pulses
D. RF excitation pulse and RF rephrasing pulse - answer>>>D. RF excitation and RF rephrasing pulses
During a gradient echo pulse sequence, the application of the slice select gradient occurs at the same
time as the:
A. RF excitation pulse
B. Fréquence Encoding
C.RF rephrasing pulses
D. RF excitation pulse and RF rephrasing pulse - answer>>>A. RF excitation pulse
During a gradient echo pulse sequence, a (Blank) is used after the application of an alpha pulse in order
to rephrase dephasing hydrogen protons.
A. Gradient Pulse
B. 180 degree RF pulse
C. 90 degree RF pulse
D. Variable degree RF pulse - answer>>>A. Gradient Pulse
,During a SE pulse sequence, the time between the 90 degree alpha pulse and the 180 degree rephrasing
pulse is called the?
A. TE
B. TR
C. TI
D. TAU (1/2 TE) - answer>>>D. TAU (1/2 TE)
What are types of spin Echo pulses? - answer>>>-Conventional Spin echo pulse sequences
- Fast spin echo pulse sequences
-Inversion recovery pulse sequences (IR)
Which of the following sets of parameters would likely provide the best T1 image weighting when a CSE
pulse sequence is applied?
A. 150 ms TR, 5 ms TE
B. 450 ms TR, 20 ms TE
C. 900 ms TR, 60 ms TE
D. 400 ms TR, 80 ms TE - answer>>>B. 450 ms TR, 20 ms TE
Which of the following sets of parameters would likely provide the best Proton Density image weighting
when a CSE pulse sequence is applied?
A. 2000 ms TR, 80 ms TE
B. 2200 ms TR, 20 ms TE
C. 100 ms TR, 20ms TE
D. 2200ms TR, 50 ms TE - answer>>>B. 2200 ms TR, 20 ms TE
Which of the following sets of parameters would likely provide the best T1 image weighting when a CSE
pulse sequence is applied?
A. 100-500 ms TR, 5-10 ms TE
B. 300-120 ms TR, 10-100 ms TE
C. 300-700 ms TR, 10-30 ms TE
D. 500-2000 ms TR, ms TE - answer>>>C. 300-700 ms TR, 10-30 ms TE
, Which of the following sets of parameters would likely provide the best T1 image weighting when a CSE
pulse sequence is applied?
A. 300-700 ms TR, 10-30 ms TE
B. 2000+ ms TR, 50+ ms TE
C. 2000+ms TR, 10-30 ms TE
D. 500-700 ms TR, 80+ms TE - answer>>>C. 2000+ms TR, 10-30 ms TE
Fast spin echo pulse sequences are a (Blank) to determine which sampled echos will contribute to image
contrast, and which will contribute to spatial resolution.
A. Effective TE
B. TR
C. Small FOV
D. Scan time - answer>>>A. Effective TE
When applying a fast spin echo pulse sequence, how many lines of k-space are filled per TR period?
A. 2 or less
B. 2 or more
C. 1
D. All lines are filled per TR period - answer>>>B. 2 or more
As ETL increases, more T2 weighting occurs (True or False) - answer>>>True
During FSE sequences, which parameter determines whether sampled data gets stored in the centre of
the periphery of k-space?
A. TR
B. Effective TE
C. Effective TR
D. Sat TR - answer>>>B. Effective TE
What is an advantage of applying fast spin echo pulse sequences (FSE)?
A. Magnetic susceptibility artifact decreases
