Multi-institutional validation of hypersight CBCT-based dose calculation on O-ring linacs.

ABSTRACT:

Background

Conventional cone-beam computed tomography (CBCT) systems are limited by suboptimal image quality, inaccurate Hounsfield unit (HU) calibration, and reduced reliability for dose calculation. HyperSight CBCT on the Halcyon platform offers improved HU accuracy, expanded field-of-view (FOV), and enhanced image quality.

Purpose

This study aimed to assess the dosimetric accuracy of treatment planning using HyperSight CBCT through phantom-based dose verification.

Methods

This study included three institutions equipped with the HyperSight imaging system on the Halcyon platform, with all procedures performed after acceptance testing and calibration. Each institution generated HU-to-density calibration curves using computed tomography (CT) scanners and standardized p

SUBMITTER: Lin CY 

PROVIDER: S-EPMC12909596 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature