Simultaneous Time-of-Flight PET/MR Identifies the Hepatic 90Y-Resin Distribution After Radioembolization

Abstract

A 61-year-old woman with multiple hepatic metastases from uterus cervical cancer received ⁹⁰Y radioembolization. The simultaneous time-of-flight (TOF) PET/MR clearly identified the untreated tumor parts on the posttherapeutic ⁹⁰Y internal pair-production imaging. After another boosted ⁹⁰Y injection, the metastatic hepatic tumors were well covered. The follow-up PET/MR revealed tumor shrinkage. The one-stop-shop TOF PET/MR provided useful follow-up information in patients receiving ⁹⁰Y radioembolization.