What does the term "spin-lattice relaxation time" (T1) represent in MRI?
MRI Quiz

Quiz
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Specialty
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University
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Medium
Wilton Muriithi
Used 3+ times
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78 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The time constant for spins to lose coherence due to magnetic field inhomogeneities
The time constant for spins to regain longitudinal magnetization
The time constant for spins to achieve transverse magnetization
The time constant for spins to lose coherence due to spin-spin interactions
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a characteristic property of T2 relaxation time in MRI?
It is shorter than T2 relaxation time
It is influenced by magnetic field inhomogeneities
It represents the time constant for spins to return to equilibrium
It is not affected by the presence of paramagnetic substances
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In MRI, what is the role of the radiofrequency (RF) coil during imaging?
It creates the main magnetic field
It receives the MR signal from the patient
It amplifies the MR signal before detection
It enhances spatial resolution of the images
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which MRI sequence is typically used for imaging T2-weighted images?
Gradient echo (GRE)
Inversion recovery (IR)
Spin echo (SE)
Echo-planar imaging (EPI)
5.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the purpose of applying a slice-selective RF pulse in MRI?
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6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To excite spins within a specific slice
To excite spins within a specific slice
To refocus spins after dephasing
To dephase spins for T2-weighted imaging
To reduce T1 relaxation times
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following imaging artifacts is caused by magnetic field inhomogeneities in MRI?
Chemical shift artifact
Aliasing artifact
Zipper artifact
Flow artifact
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