MRI registry review questions (advanced
applications) Questions and Answers 100%
Solved
Which of the following is NOT a metabolite found in a 1H spectrum of normal brain tissue?
A. Creatine
B. Lactate
C. Succinylcholine
D. N-acetyl aspartic acid ✔️✔️C. Succinylcholine
Succinylcholine is a respiratory suppressant, not a metabolite found in normal brain tissue.
____________ can be described as water molecules moving the same way in every direction.
A. Anisotropic diffusion
B. Isotropic diffusion
C. Anisotropic voxel
D. Isotropic voxel ✔️✔️B. Isotropic diffusion
Isotropic diffusion: Water molecules move the same way in every direction.
Contrast in Diffusion Weighted Imaging (DWI) depends on:
A. The degree to which molecular mobility is impaired (water restriction)
B. The sensitivity of the sequence to Brownian motion
C. The direction of water diffusion
D. All of the above ✔️✔️D. All of the above
,Contrast in Diffusion Weighted Imaging (DWI) depends on the degree to which molecular
mobility is impaired (water restriction), the sensitivity of the sequence to Brownian motion, and
the direction of water diffusion.
The final result in a perfusion study is:
A. MIPped images of vascular anatomy
B. A spectrum of specific detected metabolites
C. A set of calculated images which indicate various flow characteristics
D. Calculated MPR images of a 3D data set ✔️✔️C. A set of calculated images which indicate
various flow characteristics
The final result in a perfusion study is a set of calculated images which indicate various flow
characteristics.
What would the pixel shift be in a sequence acquired at 1.5Tesla (220 Hz) with a 224 matrix and
a BW of 26.8 kHz?
A. 0.8
B. 1.2
C. 1.8
D. 2.0
E. 2.8 ✔️✔️C. 1.8
26.8(bandwidth in kHz) x 1000 to convert into Hz = 26800
26800 ÷ 224(matrix) = 120 Hz frequency difference per pixel
220(chemical shift) ÷ 120 = 1.8, the fat image will be shifted 1.8 pixels along the
frequency/readout axis relative to water
The final result in a spectroscopy study is:
A. MIPped images of vascular anatomy
, B. Calculated images which indicate various flow characteristics
C. A spectrum of specific detected metabolites
D. Calculated MPR images of a 3D data set ✔️✔️C. A spectrum of specific detected
metabolites
In DWI sequences, ADC stands for:
A. Analog to Digital Converter
B. Amazing Dephasing Contrast
C. Amplitude Demagnetization Coercion
D. Apparent Diffusion Co-efficient ✔️✔️D. Apparent Diffusion Co-efficient
The first successful clinical application of DWI was in imaging the brain following stroke in
adults. Areas which were injured during a stroke showed up "darker" on an ADC (apparent
diffusion co-efficient) map compared to healthy tissue.
The HEIGHT of a peak on an MR spectrum correlates to the _________ of a substance that was
detected.
A. Frequency
B. T2 weighting
C. Malignancy
D. Amount ✔️✔️D. Amount
The imaging technique that employs a very rapid pulse sequence while the patient is at rest or
performing a task is:
A. Perfusion
B. Diffusion tensor imaging
C. Spectroscopy
D. Functional MRI ✔️✔️D. Functional MRI
applications) Questions and Answers 100%
Solved
Which of the following is NOT a metabolite found in a 1H spectrum of normal brain tissue?
A. Creatine
B. Lactate
C. Succinylcholine
D. N-acetyl aspartic acid ✔️✔️C. Succinylcholine
Succinylcholine is a respiratory suppressant, not a metabolite found in normal brain tissue.
____________ can be described as water molecules moving the same way in every direction.
A. Anisotropic diffusion
B. Isotropic diffusion
C. Anisotropic voxel
D. Isotropic voxel ✔️✔️B. Isotropic diffusion
Isotropic diffusion: Water molecules move the same way in every direction.
Contrast in Diffusion Weighted Imaging (DWI) depends on:
A. The degree to which molecular mobility is impaired (water restriction)
B. The sensitivity of the sequence to Brownian motion
C. The direction of water diffusion
D. All of the above ✔️✔️D. All of the above
,Contrast in Diffusion Weighted Imaging (DWI) depends on the degree to which molecular
mobility is impaired (water restriction), the sensitivity of the sequence to Brownian motion, and
the direction of water diffusion.
The final result in a perfusion study is:
A. MIPped images of vascular anatomy
B. A spectrum of specific detected metabolites
C. A set of calculated images which indicate various flow characteristics
D. Calculated MPR images of a 3D data set ✔️✔️C. A set of calculated images which indicate
various flow characteristics
The final result in a perfusion study is a set of calculated images which indicate various flow
characteristics.
What would the pixel shift be in a sequence acquired at 1.5Tesla (220 Hz) with a 224 matrix and
a BW of 26.8 kHz?
A. 0.8
B. 1.2
C. 1.8
D. 2.0
E. 2.8 ✔️✔️C. 1.8
26.8(bandwidth in kHz) x 1000 to convert into Hz = 26800
26800 ÷ 224(matrix) = 120 Hz frequency difference per pixel
220(chemical shift) ÷ 120 = 1.8, the fat image will be shifted 1.8 pixels along the
frequency/readout axis relative to water
The final result in a spectroscopy study is:
A. MIPped images of vascular anatomy
, B. Calculated images which indicate various flow characteristics
C. A spectrum of specific detected metabolites
D. Calculated MPR images of a 3D data set ✔️✔️C. A spectrum of specific detected
metabolites
In DWI sequences, ADC stands for:
A. Analog to Digital Converter
B. Amazing Dephasing Contrast
C. Amplitude Demagnetization Coercion
D. Apparent Diffusion Co-efficient ✔️✔️D. Apparent Diffusion Co-efficient
The first successful clinical application of DWI was in imaging the brain following stroke in
adults. Areas which were injured during a stroke showed up "darker" on an ADC (apparent
diffusion co-efficient) map compared to healthy tissue.
The HEIGHT of a peak on an MR spectrum correlates to the _________ of a substance that was
detected.
A. Frequency
B. T2 weighting
C. Malignancy
D. Amount ✔️✔️D. Amount
The imaging technique that employs a very rapid pulse sequence while the patient is at rest or
performing a task is:
A. Perfusion
B. Diffusion tensor imaging
C. Spectroscopy
D. Functional MRI ✔️✔️D. Functional MRI
