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Exam (elaborations)

MRI ARMRIT 2025 MRI INSTRUMENTATION TEST QUESTIONS AND ANSWERS

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MRI ARMRIT 2025 MRI INSTRUMENTATION TEST QUESTIONS AND ANSWERS ...

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MRI ARMRIT
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MRI ARMRIT








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Institution
MRI ARMRIT
Course
MRI ARMRIT

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Uploaded on
May 13, 2025
Number of pages
4
Written in
2024/2025
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Exam (elaborations)
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Questions & answers

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MRI ARMRIT 2025 MRI INSTRUMENTATION TEST
QUESTIONS AND ANSWERS




How many MRI Magnets exist and what are they ?
Three types

Permanent
Resistive
Superconductive

What is a permanent magnet?
Made of naturally ferromagnetic material

What is the field strength of a permanent magnet?
0-.03 Tesla
Good homogeneity

What are the advantages of a permanent magnet?
No fringe field
Low field strength range
No electrical power to maintain B0
No cryogen

What are the disadvantages of a permanent magnet?
Low field strength
Weight range

What is a Resistive magnet?
Requires continuous flow of electricity in electromagnetic coils and have a B0

Operates above tan superconductive

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