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68 Ga-DOTA.SA.FAPi PET in Response Assessment After 177 Lu-Microspheres Selective Intra-arterial Radionuclide Therapy
Sejal Chopra1, Yamini Mathur1, Frank Roesch2
1From the Department of Nuclear Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
Abstract:
We report a case of a 48-year-old man with recurrent hepatocellular carcinoma, who underwent FDG PET for restaging and demonstrated mildly tracer-avid arterial enhancing lesion in segment III (SUV max , 5.7). Owing to low FDG uptake, patient was planned for 68 Ga-SA.FAPi PET, which demonstrated higher tracer avidity in the lesion (SUV max , 24.4). Subsequently, patient underwent 177 Lu-microsphere SIRT (2.2 GBq) in segment III. The 3- and 6-month posttherapy SA.FAPi PET demonstrated an interval decrease in tracer uptake and size of treated lesion. This case highlighted the promising role of SA.FAPi PET in patient selection for 177 Lu-SIRT and subsequent response assessment.
