MRI contrast
Authored by Ramdina Ramdina
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary advantage of MRI compared to other imaging modalities?
Speed of imaging
Cost-effectiveness
Excellent soft tissue discrimination
Simplicity of use
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are intrinsic contrast parameters in MRI?
Parameters that can be adjusted by the operator
Parameters inherent to the body’s tissues
Settings selected on the MRI machine
External factors influencing imaging
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT an intrinsic contrast parameter?
T1 recovery time
Proton density
Flip angle
Apparent diffusion coefficient (ADC)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Extrinsic contrast parameters include all of the following EXCEPT:
TR (Repetition Time)
TE (Echo Time)
Proton density
b value
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What determines if a tissue returns a high or low signal in an MR image?
The size of the tissue
The angle of incidence of the MRI beam
The transverse component of coherent magnetization at time TE
The tissue’s proximity to the MRI coil
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does T1 relaxation time refer to?
The time it takes for 63% of transverse magnetization to be lost
The time it takes for 63% of longitudinal magnetization to be regained
The duration of the MRI scan
The interval between two successive pulses
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do fat and water differ in their T1 recovery times?
Fat has a longer T1 time because of its molecular structure
Water has a shorter T1 time due to its high inherent energy
Fat recovers more rapidly along the longitudinal axis than water
Water recovers more rapidly than fat due to its molecular mobility
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