Comparative dosimetric evaluation of single-beam dual-arc <i>versus</i> dual-beam single-arc volumetric modulated arc therapy strategies in lung stereotactic body radiotherapy using Monaco.

ABSTRACT:

Background and objective

In stereotactic body radiotherapy (SBRT) for lung cancer, the choice of volumetric modulated arc therapy (VMAT) optimization strategy is critical for achieving optimal target dose coverage while minimizing exposure to normal tissues. This study aims to compare the dosimetric performance and plan complexity of two VMAT optimization strategies in Monaco: single-beam dual-arc (1B2A) versus dual-beam single-arc (2B1A).

Methods

A retrospective analysis was conducted on 50 lung cancer patients treated with SBRT (prescription dose: 50 Gy in 5 fractions). Two VMAT plans were re-optimized using the Monaco treatment planning system: the 1B2A plan (single-beam dual-arc, collimator angle 10°) and the 2B1A plan (dual-beam single-arc, collimator angles 10° and 350

SUBMITTER: Ding J 

PROVIDER: S-EPMC12591049 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature