Calibración de PET/TC para adquisición de estudio de cuerpo estándar postratamiento con esferas de resina de ytrio-90

Abstract

IntroductionAmong the objectives in treatments with yttrium-90 spheres is to demonstrate that the tumoricidal dose is achieved and that hepatotoxic doses are avoided, as well as that there is no extrahepatic deposition. Material and methodsWe use different amounts of yttrium-90 resin micro-spheres and a NEMA NU2-2007 phantom to check if the scanner maintains a response that allows real dosimetric calculations. ResultsThe Gemini tomograph responds linearly in a wide range of activities with R2=0.9983. ConclusionThe detection capacity of the PET equipment allows us to carry out standard body studies with dosimetric purposes with times of five minutes per BED. It also make possible to verify the absence of extrahepatic deposition of significant amounts of yttrium 90 spheres.