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  • 2019-01-09

How to take-on Metal-on Metal in MRI: A Step-By-Step Guide to read Musculoskeletal MRI with Metallic implants.

Metal associated artifacts arise due tothe differencein magnetic properties of the tissues in the body (muscle, ligaments, fat, bone-that are diamagnetic and contain variable water protons) and metal (that are markedly paramagnetic or ferromagnetic and typically do not contain water protons). Types of metal associated artifacts Geometric Distortion The effect of the metal prosthesis in the magnetic field leads to geometric distortion, that in the frequency encoding direction leads to in-plane distortion, (curved appearance of straight lines) while that in the slice-selective direction leads to through-plane distortion, (shifting of information from the excited slice - the so-called "potato-chip" effect, or unintended thinner and thicker slices).

Link to complete publication here: https://scholar.google.com/citations?view_op=view_citation&hl=en&user=LSnAkaUAAAAJ&cstart=20&pagesize=80&citation_for_view=LSnAkaUAAAAJ:9yKSN-GCB0IC

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