ARRT MRI EXAM SCRIPT 2025/2026 QUESTIONS WITH
ANSWERS GRADED A+
✔✔Which of the following, in an MRA sequence, aids in minimizing the loss of signal
due to dephasing within a voxel:
A. Long TE
B. Short TR
C. Smaller voxel size
D. Short TE
E. C and D - ✔✔C and D
✔✔In order to acquire an intracranial arterial blood flow sequence, a presaturation pulse
would be applied in which location?
A. Below the heart
B. Anterior to brain
C. Inferior to slice group
D. Superior to slice group - ✔✔Superior to slice group
✔✔Which of the following best describes an EPI 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 gradient echoes
✔✔In a contrast enhanced MR angiography of the abdominal arteries, the IV gadolinium
would enhance in which order?
A. Superior mesenteric, inferior mesenteric, celiac, renal
B. Inferior mesenteric, superior mesenteric, renal, celiac
C. Celiac, superior mesenteric, inferior mesenteric, renal
D. Celiac, superior mesenteric, renal, inferior mesenteric - ✔✔Celiac, superior
mesenteric, renal, inferior mesenteric
✔✔When imaging the female pelvis, the most optimal view for evaluation of the uterus
is the:
A. Axial
B. Coronal
C. Sagittal
D. None of the above - ✔✔Sagittal
✔✔Another term used for "fever" is:
A. Hypothermia
B. Apnea
C. Dystonia
D. Febrile - ✔✔Febrile
,✔✔When parallel imaging techniques are utilized, a low resolution __________ is
acquired prior to the acquisition.
A. Geometric accuracy pulse
B. Calibration scan
C. Presaturation pulse
D. Contrast test bolus - ✔✔Calibration scan
✔✔Reducing the flip angle yields images with what change in image contrast?
A. More T2 information
B. Less T2 information
C. More T1 information
D. Less T1 information
E. None of the above - ✔✔Less T1 information
✔✔An adverse reaction or complication caused by treatment from a healthcare
professional is called:
A. Anaphylactic
B. Nosocomial
C. Iatrogenic
D. Idiopathic - ✔✔Iatrogenic
✔✔Acquiring a bit more than half the phase k-space samples, then interpolating the
data with zeroes for the remaining half is a technique known as:
A. Half Fourier
B. Fast spin echo
C. Zero Fill
D. Spoiled Gradient Echo
E. All of the above
F. A, C and/or D only
G. A and/or C only - ✔✔A and/or C only
✔✔What protocol would be selected to rule out islet cell tumor?
A. Pelvic floor laxity
B. Liver for iron
C. Adrenal glands with In/Out phase images
D. Pancreas
E. Soft tissue neck - ✔✔Pancreas
✔✔All of the following would aid in reducing scan time EXCEPT:
A. Increasing parallel imaging factor
B. Reduction in ETL
C. Reduction in NEX
D. Utilizing the coarsest matrix possible
E. Enabling half-fourier option
, F. Reducing TR - ✔✔Reduction in ETL
✔✔Which of the following is NOT affected by changing the slice thickness?
A. The image resolution
B. The signal-to-noise ratio
C. The anatomical coverage
D. The T2 contrast - ✔✔The T2 contrast
✔✔In the TMJ's, the articular disc lies between what two anatomical structures?
A. External auditory meatus and mandibular condyle
B. Pudendal nerve and mandibular condyle
C. Acetabulum and mandibular condyle
D. Mandibular fossa and mandibular condyle - ✔✔Mandibular fossa and mandibular
condyle
✔✔Active shielding can be defined as:
A. Copper lining in the walls of the scanner room
B. Performing robust prescan measurements for the purpose of field homogeneity
C. Steel lining in the walls of the scanner room
D. Superconducting windings within the MR scanner, reducing the fringe magnetic field
E. Monthly adjustments made to the magnetic field for the purpose of field uniformity -
✔✔Superconducting windings within the MR scanner, reducing the fringe magnetic field
✔✔In a dual contrast spin echo sequence with echo times of 25ms and 90ms, the
second echo image has __________ than the first echo image
I. more T2 contrast
II. lower signal-to-noise ratio
III. more T1 contrast - ✔✔I. more T2 contrast
I. lower signal-to-noise ratio
Longer TE's provide more T2 contrast, but reduced signal-to-noise ratios
✔✔Chemical or spectral fat suppression techniques suppress fat signal based on the:
A. Presence of T1 relaxation in the tissue
B. Presence of T2 relaxation in the tissue
C. Amount of fat being imaged
D. Precessional frequency of fat
E. Precessional frequency of water - ✔✔Precessional frequency of fat
✔✔The B1 magnetic field is produced by a:
A. Shim coil
B. Main magnet coil
C. Gradient coil
D. Radiofrequency coil - ✔✔Radiofrequency coil
ANSWERS GRADED A+
✔✔Which of the following, in an MRA sequence, aids in minimizing the loss of signal
due to dephasing within a voxel:
A. Long TE
B. Short TR
C. Smaller voxel size
D. Short TE
E. C and D - ✔✔C and D
✔✔In order to acquire an intracranial arterial blood flow sequence, a presaturation pulse
would be applied in which location?
A. Below the heart
B. Anterior to brain
C. Inferior to slice group
D. Superior to slice group - ✔✔Superior to slice group
✔✔Which of the following best describes an EPI 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 gradient echoes
✔✔In a contrast enhanced MR angiography of the abdominal arteries, the IV gadolinium
would enhance in which order?
A. Superior mesenteric, inferior mesenteric, celiac, renal
B. Inferior mesenteric, superior mesenteric, renal, celiac
C. Celiac, superior mesenteric, inferior mesenteric, renal
D. Celiac, superior mesenteric, renal, inferior mesenteric - ✔✔Celiac, superior
mesenteric, renal, inferior mesenteric
✔✔When imaging the female pelvis, the most optimal view for evaluation of the uterus
is the:
A. Axial
B. Coronal
C. Sagittal
D. None of the above - ✔✔Sagittal
✔✔Another term used for "fever" is:
A. Hypothermia
B. Apnea
C. Dystonia
D. Febrile - ✔✔Febrile
,✔✔When parallel imaging techniques are utilized, a low resolution __________ is
acquired prior to the acquisition.
A. Geometric accuracy pulse
B. Calibration scan
C. Presaturation pulse
D. Contrast test bolus - ✔✔Calibration scan
✔✔Reducing the flip angle yields images with what change in image contrast?
A. More T2 information
B. Less T2 information
C. More T1 information
D. Less T1 information
E. None of the above - ✔✔Less T1 information
✔✔An adverse reaction or complication caused by treatment from a healthcare
professional is called:
A. Anaphylactic
B. Nosocomial
C. Iatrogenic
D. Idiopathic - ✔✔Iatrogenic
✔✔Acquiring a bit more than half the phase k-space samples, then interpolating the
data with zeroes for the remaining half is a technique known as:
A. Half Fourier
B. Fast spin echo
C. Zero Fill
D. Spoiled Gradient Echo
E. All of the above
F. A, C and/or D only
G. A and/or C only - ✔✔A and/or C only
✔✔What protocol would be selected to rule out islet cell tumor?
A. Pelvic floor laxity
B. Liver for iron
C. Adrenal glands with In/Out phase images
D. Pancreas
E. Soft tissue neck - ✔✔Pancreas
✔✔All of the following would aid in reducing scan time EXCEPT:
A. Increasing parallel imaging factor
B. Reduction in ETL
C. Reduction in NEX
D. Utilizing the coarsest matrix possible
E. Enabling half-fourier option
, F. Reducing TR - ✔✔Reduction in ETL
✔✔Which of the following is NOT affected by changing the slice thickness?
A. The image resolution
B. The signal-to-noise ratio
C. The anatomical coverage
D. The T2 contrast - ✔✔The T2 contrast
✔✔In the TMJ's, the articular disc lies between what two anatomical structures?
A. External auditory meatus and mandibular condyle
B. Pudendal nerve and mandibular condyle
C. Acetabulum and mandibular condyle
D. Mandibular fossa and mandibular condyle - ✔✔Mandibular fossa and mandibular
condyle
✔✔Active shielding can be defined as:
A. Copper lining in the walls of the scanner room
B. Performing robust prescan measurements for the purpose of field homogeneity
C. Steel lining in the walls of the scanner room
D. Superconducting windings within the MR scanner, reducing the fringe magnetic field
E. Monthly adjustments made to the magnetic field for the purpose of field uniformity -
✔✔Superconducting windings within the MR scanner, reducing the fringe magnetic field
✔✔In a dual contrast spin echo sequence with echo times of 25ms and 90ms, the
second echo image has __________ than the first echo image
I. more T2 contrast
II. lower signal-to-noise ratio
III. more T1 contrast - ✔✔I. more T2 contrast
I. lower signal-to-noise ratio
Longer TE's provide more T2 contrast, but reduced signal-to-noise ratios
✔✔Chemical or spectral fat suppression techniques suppress fat signal based on the:
A. Presence of T1 relaxation in the tissue
B. Presence of T2 relaxation in the tissue
C. Amount of fat being imaged
D. Precessional frequency of fat
E. Precessional frequency of water - ✔✔Precessional frequency of fat
✔✔The B1 magnetic field is produced by a:
A. Shim coil
B. Main magnet coil
C. Gradient coil
D. Radiofrequency coil - ✔✔Radiofrequency coil
