Method and device for online IMRT verification

US8218725B2 · kind B2 · utility

Assignees

• Ion Beam Applications · BE
• RaySearch Laboratories AB · SE

Inventors

• Lutz Müller · Bad Hersfeld, DE
• Caterina Brusasco · Bossière, BE
• Björn Hårdemark · Stockholm, SE
• Johan Löf · Djursholm, SE
• Anders Murman · Uppsala, SE

Key dates

• Filing date: Nov 2, 2007
• Grant date: Jul 10, 2012
• Expiry date: Nov 6, 2028

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N5/1042
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method is provided for monitoring and/or signalling errors of a radiation therapy apparatus during delivery of a radiation treatment to a target, the radiation therapy apparatus being configurable for a given radiation treatment by means of a beam shaping device. The method includes providing a radiation array detector between the beam shaping device and the target, capable of providing a measured detector response of the radiation treatment; determining a predicted detector response for successive times of the radiation treatment; measuring the measured detector response caused by the radiation beams for corresponding successive times of the radiation treatment; performing a comparison between the measured detector response and the corresponding predicted detector response; signalling in a short reaction time, an error when the comparison results in a difference which exceeds a given threshold. The disclosure also relates to a device comprising electronic 2-dimensional detectors, processor device and a main software.