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Abstract #3426

Reliability of MR sequences used for attenuation correction in PET/MR

Mathias Lukas 1 , Anne Kluge 2 , Jorge Cabello 1 , Christine Preibisch 2,3 , and Stephan Nekolla 1

1 Department of Nuclear Medicine, Klinikum rechts der Isar, TU Mnchen, Munich, Germany, 2 Department of Neuroradiology, Klinikum rechts der Isar, TU Mnchen, Munich, Germany, 3 Department of Neurology, Klinikum rechts der Isar, TU Mnchen, Munich, Germany

Attenuation correction (AC) in quantitative PET/MR is affected by SNR and CNR of underlying MR sequences. In this work, the quality of MR data currently used for attenuation correction in PET (UTE, DIXON, MPRAGE) was observed in-vivo under changing clinical conditions over 3 months to investigate the reliability and robustness for in-house established MR based AC methods. In spite of its semi quantitative character, all sequences were found to be very invariant in SNR and CNR and can be used without any concerns.

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