Dose aspects of radiation therapy planning and treatment

US10850124B2 · kind B2 · utility

Assignees

• VARIAN MEDICAL SYSTEMS INTERNATIONAL AG · CH
• VARIAN MEDICAL SYSTEMS, INC. · US

Inventors

• Reynald Vanderstraeten · Uccle - Ukkel, BE
• Eric Abel · San Jose, US
• Christel Smith · Midland School, US
• Anthony Magliari · Newark, US
• Timo Koponen · Espoo, FI
• Stanley Mansfield · Sunnyvale, US
• Charles Adelsheim · Mountain View, US

Key dates

• Filing date: Sep 28, 2018
• Grant date: Dec 1, 2020
• Expiry date: Dec 22, 2038

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N5/1071
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Radiation treatment planning includes accessing values of parameters such as a number of beams to be directed into sub-volumes in a target, beam directions, and beam energies. Information that specifies limits for the radiation treatment plan are accessed. The limits include a limit on irradiation time for each sub-volume outside the target. Other limits can include a limit on irradiation time for each sub-volume in the target, a limit on dose rate for each sub-volume in the target, and a limit on dose rate for each sub-volume outside the target. The values of the parameters are adjusted until the irradiation time for each sub-volume outside the target satisfies the maximum limit on irradiation time.