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Author profile
Ryo Takahashi
Radiation Safety and Quality Assurance Division, National Cancer Center Hospital East
Beyond 2D Evaluation: MRI Polymer Gel–Based 3D DVH Verification for VMAT Lattice Radiotherapy
Lattice radiotherapy (LRT) produces steep vertex–valley gradients, making 2D gamma-based QA insufficient for clinically relevant 3D dose–volume endpoints. We propose an MRI polymer gel–based 3D DVH verification workflow for VMAT-LRT and assess feasibility and...
Poster Program · Therapy Physics
Vertex-Wise 3D QA for Lattice Radiotherapy Using Segmented Isodose Structure Analysis
This study proposes a vertex-wise Isodose Structure (IS)-based framework to evaluate the 3D geometric accuracy of Lattice Radiotherapy (LRT) dose distributions by decoupling geometric misalignment from dose-dependent volumetric distortion, enabling vertex-spe...
Proffered Program · Therapy Physics