ARRT REGISTRY EOC 2026 TEST PAPER QUESTIONS AND
ANSWERS SURE A+
✔✔Water has a __________ T1 relaxation time and a ________ T2 relaxation time.
A. Long; long
B. Short; short
C. Short; long
D. Long; short - ✔✔Long; long
✔✔Calculate the voxel volume for the following pulse sequence: TR 2000, TE 85, FOV
24cm, Matrix 272 x 320, 3mm slice thickness, 3 NSA. - ✔✔1.98mm 3
✔✔On a T2 weighted image, edema appears bright because it has a _________
relaxation time.
A. Short T1
B. Short T2
C. Long T1
D. Long T2 - ✔✔Long T2
✔✔Immediately following the application of the 90° RF pulse, the precessing protons:
A. Begin to precess in phase
B. All move into a high energy state
C. Tip into the transverse plane
D. All of the above
E. A and C only - ✔✔A and C only
✔✔Referencing the White Paper on MRI safety, individuals identified as "Level 2"
personnel include:
A. Those with no MRI safety training
B. Those with limited MRI safety training
C. Those with extensive MRI safety training, including the magnetic, gradient and RF
fields
D. B and C
E. None of the above - ✔✔Those with extensive MRI safety training, including the
magnetic, gradient and RF fields
✔✔In a superconducting magnet, the magnetic field strength is increased by increasing
the:
A. Temperature
B. Patient body weight
C. Cryogen content
D. Turns of wire
E. Tuning to a higher frequency - ✔✔Turns of wire
, ✔✔A technique utilized to reduce the MRI scan time which requires the use of an array
coil is:
A. Half Fourier
B. Parallel imaging
C. 1/2 NEX
D. Rectangular FOV
E. Partial / Fractional echo - ✔✔Parallel imaging
✔✔The _________ is defined as the resonant frequency, and is equal to the product of
the magnetic field and the gyromagnetic ratio.
A. RF excitation pulse
B. Inversion recovery
C. Presaturation pulse
D. Precessional frequency - ✔✔Precessional frequency
✔✔The Ernst angle can be defined as the optimal ___________ that yields the
____________ signal for a particular spin in the least amount of time.
A. TR; maximum
B. TE; minimum
C. Flip angle; maximum
D. Flip angle; minimum
E. NEX; maximum - ✔✔Flip angle; maximum
✔✔Which of the following is NOT a type of fomite found in an MRI environment?
A. Injection syringe
B. MRI table
C. Coil
D. Keyboard - ✔✔Injection syringe
✔✔The unit of measurement of the magnetic field surrounding the periphery of the MR
scanner is expressed as:
A. Tesla
B. Ohm
C. Volts
D. Gauss
E. Relaxation - ✔✔Gauss
✔✔Which of the following best describes a FSE sequence?
A. A 180° pulse followed by a 90°/180° combination
B. A 90° pulse followed by a 180° pulse
C. A train of gradient echoes
D. A train of spin echoes - ✔✔A train of spin echoes
ANSWERS SURE A+
✔✔Water has a __________ T1 relaxation time and a ________ T2 relaxation time.
A. Long; long
B. Short; short
C. Short; long
D. Long; short - ✔✔Long; long
✔✔Calculate the voxel volume for the following pulse sequence: TR 2000, TE 85, FOV
24cm, Matrix 272 x 320, 3mm slice thickness, 3 NSA. - ✔✔1.98mm 3
✔✔On a T2 weighted image, edema appears bright because it has a _________
relaxation time.
A. Short T1
B. Short T2
C. Long T1
D. Long T2 - ✔✔Long T2
✔✔Immediately following the application of the 90° RF pulse, the precessing protons:
A. Begin to precess in phase
B. All move into a high energy state
C. Tip into the transverse plane
D. All of the above
E. A and C only - ✔✔A and C only
✔✔Referencing the White Paper on MRI safety, individuals identified as "Level 2"
personnel include:
A. Those with no MRI safety training
B. Those with limited MRI safety training
C. Those with extensive MRI safety training, including the magnetic, gradient and RF
fields
D. B and C
E. None of the above - ✔✔Those with extensive MRI safety training, including the
magnetic, gradient and RF fields
✔✔In a superconducting magnet, the magnetic field strength is increased by increasing
the:
A. Temperature
B. Patient body weight
C. Cryogen content
D. Turns of wire
E. Tuning to a higher frequency - ✔✔Turns of wire
, ✔✔A technique utilized to reduce the MRI scan time which requires the use of an array
coil is:
A. Half Fourier
B. Parallel imaging
C. 1/2 NEX
D. Rectangular FOV
E. Partial / Fractional echo - ✔✔Parallel imaging
✔✔The _________ is defined as the resonant frequency, and is equal to the product of
the magnetic field and the gyromagnetic ratio.
A. RF excitation pulse
B. Inversion recovery
C. Presaturation pulse
D. Precessional frequency - ✔✔Precessional frequency
✔✔The Ernst angle can be defined as the optimal ___________ that yields the
____________ signal for a particular spin in the least amount of time.
A. TR; maximum
B. TE; minimum
C. Flip angle; maximum
D. Flip angle; minimum
E. NEX; maximum - ✔✔Flip angle; maximum
✔✔Which of the following is NOT a type of fomite found in an MRI environment?
A. Injection syringe
B. MRI table
C. Coil
D. Keyboard - ✔✔Injection syringe
✔✔The unit of measurement of the magnetic field surrounding the periphery of the MR
scanner is expressed as:
A. Tesla
B. Ohm
C. Volts
D. Gauss
E. Relaxation - ✔✔Gauss
✔✔Which of the following best describes a FSE sequence?
A. A 180° pulse followed by a 90°/180° combination
B. A 90° pulse followed by a 180° pulse
C. A train of gradient echoes
D. A train of spin echoes - ✔✔A train of spin echoes
