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Abstract #3881

Value of Wholebody 18F-FDG PET/MRI in the Diagnosis Liver Metastases in Comparison to PET/CT

Karsten Beiderwellen1, Benedikt Gomez2, Verena Hartung-Knemeyer2, Christian Buchbender3, Felix Nensa1, Hilmar Kuehl1, Andreas Bockisch2, Thomas C. Lauenstein1

1Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany; 2Clinic for Nuclear Medicine, University Hospital Essen, Essen, Germany; 3Department of Diagnostic and Interventional Radiology, University Hospital Dusseldorf, Dusseldorf, Germany

The purpose of this study was to evaluate the potential of simultaneaously acquired wholebody PET/MRI with 18F-FDG in the diagnosis of liver metastases in comparison to PET/CT. 71 patients with solid tumors received in a whole body PET/CT and subsequently underwent a wholebody PET/MRI (Biograph mMR, Siemens Healthcare). The resulting datasets (PET/CT, PET/MRI) were rated separately by two readers. The criteria comprised scores for lesion detectability and diagnostic confidence. Due to the high soft tissue contrast of MRI significantly higher scores for lesion conspicuity and diagnostic confidence were found in PET/MRI.