Determining an irradiation plan for a particle irradiation unit

US9750956B2 · kind B2 · utility

Assignee

• Siemens Healthcare Limited · DE

Inventors

• Jörg Bohsung · Heidelberg, DE
• Thilo Elsässer · Buckenhof, DE
• Sven Oliver Grözinger · Eschborn, DE
• Iwan Kawrakow · Sofia, BG
• Johann Kim · Erlangen, DE
• Robert Neuhauser · Bruckberg, DE
• Eike Rietzel · Weiterstadt, DE
• Oliver Thilmann · Augsburg, DE

Key dates

• Filing date: Jun 7, 2013
• Grant date: Sep 5, 2017
• Expiry date: Nov 20, 2033

Classification

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

Abstract

A target volume within a test object is irradiated according to an irradiation plan with a particle beam using a particle irradiation unit. The irradiation plan is determined in order to apply the energy of the particle beam in the target volume according to a predetermined dose distribution. In addition, a boundary condition is specified for at least one of the isoenergy layers and the irradiation plan is additionally specified such that the boundary condition is met for the at least one isoenergy layer. The boundary condition includes one or more of a minimum boundary energy, a maximum boundary energy, a minimum grid point number, a minimum total particle number, a minimum total dose, a minimum dose contribution to a total dose to be administered, a minimum contribution to a target function which is calculated for determining the irradiation plan, and a minimum dose compensation error.