Development of Isocenter Measurement Method Considering the Displacement of the Focal-Spot Position of a Medical Linear Accelerator

Azarinai S, Nishitani K and Musakawa ST

Published on: 2025-06-02

Abstract

Purpose: Measurement of beam alignment including an isocenter are a fundamental part of commissioning for a Medical linear accelerator (linac). An alignment shift be caused by the focal spot displacement from beam axis. In this study we present a procedure for the analysis of the focal spot positions in the radiation alignment using newly developed QCT (quality control tool) device.