Multi-institutional study on the commissioning and clinical implementation of the TrueBeam enhanced leaf model in the Eclipse treatment planning system.

ABSTRACT:

Purpose

Recently, the Enhanced Leaf Modeling (ELM) was developed to improve the multileaf collimator (MLC) model in the Eclipse treatment planning system (TPS). This multi-institutional study evaluated the dose calculation accuracy and clinical feasibility of the ELM for TrueBeam linear accelerators (linacs) equipped with Millennium 120 and High-Definition 120 MLCs. In addition, to facilitate broader clinical adoption, the feasibility of using machine-averaged ELMs (ELM_Ave) for both MLC types was evaluated.

Methods

Twelve TrueBeam linacs from nine institutions were included. Machine-specific ELM (ELM_MS) parameters, including Leaf Transmission (LT) and the Leaf Gap (LG), were derived from vendor MLC sequences. Three volumetric modulated arc therapy (VMAT

SUBMITTER: Miyasaka R 

PROVIDER: S-EPMC12646809 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature