Abstract #1872

Quantitative evaluation of mapping of magnetic distortion due to metallic materials

Takahiko Kaneda¹, Kazuya Oshinomi¹, Naoki Ohno², Toshiaki Miyati², and Toru Yamamoto³

¹Graduate School of Health Sciences, Hokkaido University, Sapporo, Japan, ²Division of Health sciences, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan, ³Faculty of Health Sciences, Hokkaido University, Sapporo, Japan

Evidence that the magnetic field distortion of an artificial knee joint and an Elgiloy rod in ppm unit does not change at 0.4-T and 3.0-T MRI was demonstrated. The susceptibility of Elgiloy and Ti alloy rods was derived from the magnetic distortion maps and the value of Ti alloy rod especially agreed with the known susceptibility of its material. The obtained value of the magnetic field distortion is quantitatively reliable.

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