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Abstract #0882

MR-PET simultaneous acquisitions with attenuation correction using LSO background radiation.

Liliana Lourenco Caldeira1, Theodoros Kaltsas1, Jürgen Scheins1, Elena Rota Kops1, Lutz Tellmann1, Uwe Pietrzyk1, Christoph Lerche1, and N. Jon Shah1,2

1Institute of Neuroscience and Medicine, Forschungszentrum Jülich, Jülich, Germany, 2Department of Neurology, Faculty of Medicine, JARA, RWTH Aachen University, Aachen, Germany

In this work, the goal is to perform attenuation correction (AC) for MR-PET scanners using the background activity from LSO (Cerium-doped Lutetium Oxyorthosilicate) scintillator used in PET scanners. This approach has the advantage of obtaining a geometrically aligned AC map with the PET emission scans, which can be useful for coil AC maps. We demonstrate our approach for the Siemens 3T MR-BrainPET with a Tx/Rx 8-channel head coil and a 3-rod phantom.

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