MRI Capstone| 175 Quiz Questions Well Solved|2024 |41 Pages
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Course
MRI Capstone
Institution
MRI Capstone
The 2003 FDA revision on RF absorption limits the absorption ______ for the head. - ️3.0W/kg for 10 minutes
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....
MRI Capstone 175 Quiz Questions Well
Solved|2024
The 2003 FDA revision on RF absorption limits the absorption ______ for the head. - ✔ 3.0W/kg for 10
minutes
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
Active shieldcan be defined as: - ✔ Superconducting windings within the MR scanner, reducing the
fringe magnetic field
An adverse reaction or complication caused by treatment from a healthcare professional is called:
A. Anaphylactic
B.Nosocomial
C. Iatrogenic
D. Idiopathic - ✔ C. Latrogenic
All of the following are examples of INTRINSIC contrast parameter tissues EXCEPT:
A. Proton density
B. ADC
C. T2 time of tissue
D. T1 time of tissue
,E. TR - ✔ E. TR
All of the following artifacts except ____ occur along the phase encoding axis.
A. Aliasing
B. Ghosting
C. Wrap around
D. Chemical Shift - ✔ D. Chemical Shift
All of the following comprise the biliary tree EXCEPT:
A. Left hepatic duct
B. Right hepatic duct
C. Common bile duct
D. Splenic duct
E. Pancreatic duct - ✔ D. Splenic duct
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 coarsest matrix possible
E. Enabling half-fourier option - ✔ B. Reduction in ETL
All of the following yield a higher signal to noise EXCEPT
A. Increase in TR
B. Larger FOV
C. Higher NEX
D. Decrease in ETL
E. Increase in TE - ✔ E. Increase in TE
Another term used for "fever" is
,A. Hypothermia
B. Apnea
C. Dystonia
D. Febrile - ✔ D. Febrile
As the number of phase encodings is increased from 256 to 512, SNR (signal to noise ratio):
A. Increases
B. Decreases
C. Doubles
D. Does not change - ✔ B. Decreases
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 - ✔ II. The available number of slices is decreased
As the TR is increased,
I. SNR is increased
II. Available number of slices is increased
III. T2 information is maximized - ✔ C. I and II only
Calculate the available imaging time for a patient with a heart rate of 90 beats/min, trigger window 15%
and trigger delay of 80ms.
A. 487 ms
B. 567 ms
C. 667 ms
D. 787 ms - ✔ A. 487 ms
Calculate the dose of contrast (0.1mmol/kg) that should be administered to a patient weighing 176 lbs
with normal kidney function in a routine MR examination.
, A. 6mL
B. 8mL
C. 12mL
D. 16mL
E. 18mL - ✔ D. 16mL
Calculate the effective TR for a patient with a heart rate of 70 beats / min.
A. 692 ms
B. 857 ms
C. 1024 ms
D. 1223 ms - ✔ B. 857 ms
Calculate the pixel area for the following sequence: TR 4000, TE 120, FOV 36cm, 408 x 512 matrix, 2 NEX,
ETL 12.
A. 0.62 mm2
B. 0.70 mm2
C. 0.76 mm2
D. 0.88 mm2
E. 1.58 mm2 - ✔ A. 0.62 mm2
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 - ✔ D. Precessional frequency of fat
Choose the correct slice thickness to create an isotropic voxel for the following: TR 2000, TE 90, Matric
272 x272, FOV 24cm
A. 0.76mm
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