Method of operating an ion beam therapy system with monitoring of beam position

US6600164B1 · kind B1 · utility

Assignee

• Gesellschaft für Schwerionenforschung mbH · DE

Inventors

• Eugen Badura · Darmstadt, DE
• Hartmut Eickhoff · Darmstadt, DE
• Hans-Georg Essel · Darmstadt, DE
• Thomas Haberer · Darmstadt, DE
• Klaus Poppensiecker · Darmstadt, DE

Key dates

• Filing date: Nov 2, 2001
• Grant date: Jul 29, 2003
• Expiry date: Nov 2, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G21K5/10
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for the operation of an ion beam therapy system that comprises a grid scanner device, arranged in a beam guidance system (6, 8), having vertical deflection means (13) and horizontal deflection means (14) for the vertical and horizontal deflection of a treatment beam (11) perpendicular to its beam direction, with the result that the treatment beam (11) is deflected by the grid scanner device to an isocentre (10) of the irradiation site and scans a specific area surrounding the isocentre (10). For monitoring the operational stability and operational safety of the therapy system, the beam position of the treatment beam (11) in the region of the isocentre (10) is monitored and evaluated, intervention in the ion beam therapy system being carried out if the evaluation of the beam position shows a departure, from a predetermined desired value, that exceeds a specific tolerance value based on a required half-value width of the beam profile. That tolerance value is especially ±25 % of the required half-value width.