System and method for scanning pattern optimization for flash therapy treatment planning

US11865361B2 · kind B2 · utility

Assignees

• VARIAN MEDICAL SYSTEMS, INC. · US
• VARIAN MEDICAL SYSTEMS PARTICLE THERAPY GMBH & CO. KG · DE
• SIEMENS HEALTHINEERS INTERNATIONAL AG · CH

Inventors

• Jessica PEREZ · Geneva, CH
• Eric Abel · San Jose, US
• Michael Folkerts · Carrollton, US
• Christel Smith · Midland School, US
• Adam Harrington · Glastonbury, US
• Timo Koponen · Espoo, FI
• Reynald Vanderstraeten · Uccle - Ukkel, BE
• Anthony Magliari · Newark, US
• Michiko Rossi · Espoo, FI

Key dates

• Filing date: Apr 3, 2020
• Grant date: Jan 9, 2024
• Expiry date: Dec 2, 2040

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N2005/1087
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Embodiments of the present invention provide methods and systems for proton therapy planning that maximize the dose rate for different target sizes for FLASH therapy treatment are disclosed herein according to embodiments of the present invention. According to embodiments, non-standard scanning patterns can be generated, for example, using a TPS optimizer, to maximize dose rate and the overall FLASH effect for specific volumes at risk. The novel scanning patterns can include scanning subfields of a field that are scanned independently or spiral-shaped patterns, for example. In general, spot locations and beam paths between spots are optimized to substantially achieve a desired dose rate in defined regions of the patient's body for FLASH therapy treatment.