RapidArc Dynamic (RAD) multi-mechanical axis optimization achieves enhanced OAR sparing in cervical cancer: A dosimetric comparison study.

ABSTRACT:

Purpose

To overcome limitations of conventional VMAT for cervical cancer, specifically restricted OAR sparing due to static collimators and delivery constraints inherent to dynamic modulation, we systematically evaluate RapidArc Dynamic (RAD) technology. This first comprehensive assessment focuses on RAD's multi-axis coordination for optimized pelvic radiotherapy planning.

Methods

Twenty cervical cancer patients treated with TrueBeam whose energy was 6MV X-ray were retrospectively analyzed. The prescription was 45 Gy/25Fractions. Seven RAD-based planning strategies with varying collimator rotation modes (Optimize [OPT] vs. Optimize Between Static Angles [OBSA] vs. Static [STAT]) and aperture sizes (15 vs. 30 cm) and different static angle ports were developed using identical

SUBMITTER: Meng X 

PROVIDER: S-EPMC12912941 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature