
MRI 1
Authored by Al M
Science
University
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59 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
MRI is based on the magnetic properties of ________.
atomic nuclei
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The magnetism of atomic nuclei is very small, but if we have a very large number of nuclei, we can detect the ________ magnetisation.
hydrogen
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does putting a patient in the strong magnetic field of an MRI scanner create?
A temporary net magnetisation that we can manipulate
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The strength and behaviour of the induced magnetisation depends on the type of ________, and the way we perform the MRI scan.
current
tissue
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The human body contains lots of water (two hydrogen nuclei per water molecule) and, in most of us, lots of fat (many hydrogen nuclei per fat molecule).
False
True
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
The human body is about __% hydrogen by number of atoms. Most is in water which has strong magnetisation.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What two factors combine to make MRI feasible?
Prevalence of nuclei AND magnetic strength of the hydrogen nucleus magnetisation
Static electricity AND thermal imaging
High voltage AND light pulses
Weak magnetic fields AND sound waves
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