Nontargeted Y-90 Microsphere Radioembolization to Duodenum Visualized on Y-90 PET/CT and Bremsstrahlung SPECT/CT

Abstract

Yttrium-90 (Y-90) radioembolization has emerged as a new method for treatment of unresectable hepatic tumors. We present interesting imaging findings of extrahepatic Y-90 activity in the duodenum on Y-90 PET/CT and Bremsstrahlung SPECT/CT, after injection of radiomicrospheres into the right hepatic artery. This is the first reported case of nontargeted embolization of Y-90 microspheres to duodenum visualized post-therapy on both Y-90 PET/CT and Bremsstrahlung SPECT/CT.