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1. (WO2018078435) RADIATION TREATMENT PLANNING AND EXECUTION

Pub. No.:    WO/2018/078435    International Application No.:    PCT/IB2017/001305
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Sat Oct 28 01:59:59 CEST 2017
IPC: A61N 5/10
Applicants: VARIAN MEDICAL SYSTEMS INTERNATIONAL AG
Inventors: NORD, Janne, I.
KAUPPINEN, Juha
TOIMELA, Lasse, H.
Title: RADIATION TREATMENT PLANNING AND EXECUTION
Abstract:
An apparatus for use in a treatment planning process or in a treatment process, includes: an input for obtaining a parameter representing a number of beam on-off transitions; and a treatment planner configured to optimize a treatment plan based on parameter representing the number of beam on-off transitions. An apparatus includes: an input configured to obtain a width of a gating window for a treatment plan; and a gating window adjustor configured to adjust the width of the gating window during a treatment session. An apparatus includes: a dose calculator configured to calculate doses for different treatment variations; an evaluator configured to evaluate treatment acceptance criteria against the calculated doses; and a delivery limit module configured to determine one or more limits for one or more delivery parameters based on an evaluation of the treatment acceptance criteria by the evaluator.