Lung Dose Measured on Postradioembolization ⁹⁰Y PET/CT and Incidence of Radiation Pneumonitis

Radiation pneumonitis is a rare but possibly fatal side effect of Yttrium-90 (⁹⁰Y) radioembolization. It may occur 1 to 6 months after therapy, in case a significant part of the ⁹⁰Y microspheres shunt to the lungs. In current clinical practice, a predicted value of lung dose greater than 30Gy is considered a criterion to exclude patients from treatment. However, contrasting findings regarding the occurrence of radiation...