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Abstract #2713

Optimized Methodology for Worst-Case Determination of Orthopedic Implants for Magnetic Resonance Safety Testing

Bruno Camps-Raga1, Wolfgang Grtz1, Amin Douiri1, Michael Scholten1, Mark J. Pawlenka1, Gregor Schaefers1

1MR:comp GmbH, MR Safety Testing Laboratory, Buschgrundstr. 33, 45894 Gelsenkirchen, Germany

A methodology for worst-case selection through computer simulation techniques to be used as an input to determine worst-case object and position in subsequent RF heating tests following ASTM2182-09 is described.

Keywords

absorption according achieving active amount available axis becomes birdcage bore certain coil coils combined comp component composed computed conditions configuration configurations considered correlated corresponds defined deposition described design designs detailed determine determined device diameters effort electrical engineering enormous establish established exam experimental field fields finite frequency full gain generic geometry heating highest implant implantable implants implement implemented included increasing indicator induced irrelevant knee laboratory lengths local location locations longitudinal manufacturer mark material matrix measured medical methodology model models near necessary nephew normalized numerical objects operating operation optimized organization orientation oriented orthopedic otherwise partner passive patients peak phantom place placed poor potential power presence probes process products properties prosthetic published quantitative radiology raga reduce reduction related representative respectively rich rise risk safety scanner scanners selected selection setup setups several shielded simulated simulation simulations since smith spots strength subsequent surroundings systems table take technical temperature tissue trio unit usually validation wide worst yields