SU‐F‐J‐212: Enabling Conventional Cone Beam CT with the Capability of Dual Energy Imaging Using a Simple Add‐On Beam Modifier

Purpose: In searching for a robust, efficient and cost‐effective dual energy cone beam CT (DECBCT) solution for various radiation oncology applications, in particularly for improved proton dose planning/replanning accuracy and DE‐CBCT guided radiation therapy, we investigate a novel energy modulation scheme using a beam modifier placed between the source and patient and optimize its geometric configuration for routine clinical use. Methods: …