Using an Assumed Lung Mass Inaccurately Estimates the Lung Absorbed Dose in Patients Undergoing Hepatic Yttrium Radioembolization Therapy.

Rationale: Currently, the estimated absorbed radiation dose to the lung in Y radioembolization therapy is calculated using an assumed 1 kg lung mass for all patients. The aim of this study was to evaluate whether using a patient-specific lung mass measurement for each patient rather than a generic, assumed 1 kg lung mass would change the estimated lung absorbed dose.

Methods: A retrospective analysis was performed on 68 patients who had undergone Y radioembolization therapy at our institution.