Presentation
Outline
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MRI Principles |
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MRI
uses low-energy (radiofrequency, rf) radiation,
magnetic fields and computers to create
2-D images based on the varying local environments
of water molecules in the body
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| • | Water molecules: H2O -- contain protons (1H) with nuclear spin _ |
| • | In a magnetic field, nuclei with spin 1/2 can absorb rf energy; they then emit the energy in patterns that depend upon their local environments |
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