ARRT MRI EXAM 2024
ANSWER ALL QUESTIONS IN THIS SECTION
QUESTION 1
All of the following are examples of INTRINSIC contrast parameters in tissues
EXCEPT:
A. Proton density
B. ADC (apparent diffusion coefficient)
C. T2 time of tissue
D. T1 time of tissue
E. TR - ANSWERS-TR
QUESTION 2
Choose the correct slice thickness to create an isotropic voxel for the following:
TR 2000, TE 90, Matrix 272 x 272, FOV 24cm.
A. 0.76mm
B. 0.88mm
C. 0.93mm
D. 1.13mm
E. 1.24mm - ANSWERS-0.88mm
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, ARRT MRI EXAM 2024
QUESTION 3
The __________________ runs the length of the falx cerebri.
A. Frontal sinus
B. Superior sagittal sinus
C. Transverse anterior sinus
D. Lateral sinus
E. Cerebral sinus - ANSWERS-Superior sagittal sinus
QUESTION 4
The receiver bandwidth (rBW) affects:
I. Signal-to-noise ratio (SNR)
II. Slice thickness
III. Chemical shift
IV. Spatial resolution - ANSWERS-I. Signal-to-noise ratio (SNR)
III. Chemical shift
QUESTION 5
The final result in a spectroscopy study is:
A. A spectrum of specific detected metabolites
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, ARRT MRI EXAM 2024
B. MIPped images of vascular anatomy
C. Calculated MPR images of a 3D data set
D. A set of calculated images which indicate various flow characteristics -
ANSWERS-A spectrum of specific detected metabolites
QUESTION 6
Shimming in MRI can be performed by all the following EXCEPT:
A. Turning the shim coil off and on rapidly
B. Adding current to the gradient coils
C. Adding metal to different coils within the shim coil
D. Changing the current in the shim coil - ANSWERS-Turning the shim coil off
and on rapidly
QUESTION 7
The process that digitizes the MR signals is known as:
A. Hahn's echo
B. Fourier transform
C. Gyromagnetic reconstruction
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, ARRT MRI EXAM 2024
D. Moire effect
E. Faraday's law - ANSWERS-Fourier transform
QUESTION 8
As the TE is increased,
I. The available number of slices is increased
II. The available number of slices is decreased
III. SNR increases
IV. T1 contrast is maximized - ANSWERS-The available number of slices is
decreased
QUESTION 9
If a 192 phase resolution is required, the TR must then be repeated _______ times
(for 1 NEX). - ANSWERS-192
QUESTION 10
The _____________ imaging plane would be the most optimal slice orientation for
evaluation of Arnold Chiari Malformation and its inferior cerebellar tonsillar
herniation.
END OF
PAGE 4
ANSWER ALL QUESTIONS IN THIS SECTION
QUESTION 1
All of the following are examples of INTRINSIC contrast parameters in tissues
EXCEPT:
A. Proton density
B. ADC (apparent diffusion coefficient)
C. T2 time of tissue
D. T1 time of tissue
E. TR - ANSWERS-TR
QUESTION 2
Choose the correct slice thickness to create an isotropic voxel for the following:
TR 2000, TE 90, Matrix 272 x 272, FOV 24cm.
A. 0.76mm
B. 0.88mm
C. 0.93mm
D. 1.13mm
E. 1.24mm - ANSWERS-0.88mm
END OF
PAGE 1
, ARRT MRI EXAM 2024
QUESTION 3
The __________________ runs the length of the falx cerebri.
A. Frontal sinus
B. Superior sagittal sinus
C. Transverse anterior sinus
D. Lateral sinus
E. Cerebral sinus - ANSWERS-Superior sagittal sinus
QUESTION 4
The receiver bandwidth (rBW) affects:
I. Signal-to-noise ratio (SNR)
II. Slice thickness
III. Chemical shift
IV. Spatial resolution - ANSWERS-I. Signal-to-noise ratio (SNR)
III. Chemical shift
QUESTION 5
The final result in a spectroscopy study is:
A. A spectrum of specific detected metabolites
END OF
PAGE 2
, ARRT MRI EXAM 2024
B. MIPped images of vascular anatomy
C. Calculated MPR images of a 3D data set
D. A set of calculated images which indicate various flow characteristics -
ANSWERS-A spectrum of specific detected metabolites
QUESTION 6
Shimming in MRI can be performed by all the following EXCEPT:
A. Turning the shim coil off and on rapidly
B. Adding current to the gradient coils
C. Adding metal to different coils within the shim coil
D. Changing the current in the shim coil - ANSWERS-Turning the shim coil off
and on rapidly
QUESTION 7
The process that digitizes the MR signals is known as:
A. Hahn's echo
B. Fourier transform
C. Gyromagnetic reconstruction
END OF
PAGE 3
, ARRT MRI EXAM 2024
D. Moire effect
E. Faraday's law - ANSWERS-Fourier transform
QUESTION 8
As the TE is increased,
I. The available number of slices is increased
II. The available number of slices is decreased
III. SNR increases
IV. T1 contrast is maximized - ANSWERS-The available number of slices is
decreased
QUESTION 9
If a 192 phase resolution is required, the TR must then be repeated _______ times
(for 1 NEX). - ANSWERS-192
QUESTION 10
The _____________ imaging plane would be the most optimal slice orientation for
evaluation of Arnold Chiari Malformation and its inferior cerebellar tonsillar
herniation.
END OF
PAGE 4
