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 Shah^1,2

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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