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Abstract #1741

18-FDG PET/MRI Performs Comparably to 18-FDG PET/CT and Better Than MRI in Metastatic Breast Cancer

Amy Melsaether1, Akshat C. Pujara, Rajan Rakheja, Mohammed Shaikh, Eric E. Sigmund, Sungheon Kim, Christian Geppert, Linda Moy

1Radiology, NYU, New York, NY, United States

This study describes and compares the novel modality, 18FDG-PET/MRI, with 18FDG-PET/CT and whole body MRI alone in the evaluation of multi-organ system metastatic breast cancer. Results suggest PET/MRI provides similar sensitivity and confidence for suspicious lesions across organ systems as compared with PET/CT and increased specificity as compared with PET/CT and MRI alone, also across organ systems, for lower confidence lesions. Although PET/MRI detects more incidentalomas, the MRI data is usually sufficient for characterization and additional tests are not frequently required. PET/MRI can provide this information at approximately one-half the radiation dose of 18FDG-PET/CT.