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Magnetic action on hydrogen ions - is the simplest and shortest answer to this question. MRI is distinct from other forms of radiography in that no radiation is used.

MRI images often provide the best definition of structures. In some cases, contrast enhancement (e.g. with gadolinium) is needed for the best definition (e.g. certain tumors, etc.).

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13y ago
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Q: What best characterizes an MRI?
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