Summary
International Symposium on Nonlinear Theory and Its Applications
2022
Session Number:D1L-C
Session:
Number:D1L-C-04
Continuous-Time Method to Plan Volumetric Modulated Arc Therapy
Fumino Obayashi , Ken'Ichi Fujimoto,
pp.617-620
Publication Date:12/12/2022
Online ISSN:2188-5079
Summary:
Volumetric modulated arc therapy (VMAT) is a treatment method that irradiates X-rays to target tissues within human body while continuously rotating a gantry. Since the intensity of X-rays must be controlled throughout the rotation, large changes of X-ray intensity are not desirable. The problem of finding a VMAT plan can be formulated as an inverse problem and solved with a dynamical system. In this paper, to find VMAT plans, we proposed an objective function with regularization related to the intensity of X-rays and a dynamical system to minimize the objective function. Our experimental results showed that the proposed system worked well for a toy problem on VMAT.