Abstract #2693

MR-Based Field-Of-View Extension: Compensation of Field Imperfections

Jan Ole Blumhagen^1,2, Ralf Ladebeck¹, Matthias Fenchel¹, Jrgen Kampmeier¹, Klaus Scheffler²

¹Magnetic Resonance, Siemens Healthcare, Erlangen, Bavaria, Germany; ²Division of Radiological Physics, University of Basel Hospital, Basel, Switzerland

Recently, the potential impact of a limited MR-based field-of-view (FoV) in whole-body MR/PET attenuation correction has been shown. In MR/PET the tissue attenuation map can be calculated from the MR images. However, the FoV restriction may cause a truncation of the MR data for bigger patients and therefore can bias the PET data reconstruction. In this work, we will show exemplarily for 2DFT spin-echo sequences a method that offers an extended FoV in the transversal plane of up to 600mm using a gradient field that compensates B0 inhomogeneities.