Abstract #4190

Retrospective evaluation of the maximum MR image artifact size according to ASTM F2119 with respect to sequences and slice orientations relevant for MR compatibility testing

Tobias Spronk^1,2,3, Jakob Kreutner^1,4, Oliver Kraff², Harald Quick^2,3, and Gregor Schaefers^1,4

¹MR:comp GmbH, Gelsenkirchen, Germany, ²Erwin L. Hahn Institute for MR Imaging, University of Duisburg-Essen, Essen, Germany, ³High-Field and Hybrid MR Imaging, University Hospital Essen, Essen, Germany, ⁴MRI-STaR-Magnetic Resonance Institute for Safety, Technology and Research GmbH, Gelsenkirchen, Germany

This study examines the influence of sequence type, slice orientation and test object orientation on artifact size for medical implants. For this purpose, 79 different objects were evaluated according to ASTM F2119 and the influence of the different parameters was investigated. The evaluation shows that gradient echo sequences more often represented the worst case MR image artifact size as compared to the corresponding spin echo sequences. In addition to this result, the sagittal slice orientation, as compared to the transversal slice orientation, was shown to produce the worst case MR image artifact.

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