The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 18, 2004
Filed:
Nov. 14, 2001
Method for operating an ion beam therapy system by monitoring the distribution of the radiation dose
Gunther Hartmann, Darmstadt, DE;
Peter Heeg, Darmstadt, DE;
Oliver Jaekel, Darmstadt, DE;
Christian Karger, Darmstadt, DE;
Gesellschaft fuer Schwerionenforschung mbH, Darmstadt, DE;
Abstract
A method for operation of an ion beam therapy system that comprises a grid scanner device, arranged in a beam guidance system ( ), having vertical deflection means ( ) and horizontal deflection means ( ) for the vertical and horizontal deflection of a treatment beam ( ) perpendicular to its beam direction, with the result that the treatment beam ( ) is deflected by the grid scanner device to an isocentre ( ) of the irradiation site and scans a specific area surrounding the isocentre ( ) using a specific radiation dose. Both the depth dose distribution and the transverse dose distribution of the grid scanner device ( ) at various positions in the region of the isocentre ( ) are measured and evaluated, it being concluded that the radiation dose distribution is adequately homogeneous if the degree of variation in the radiation dose values measured at the individual positions does not exceed a specific tolerance limit value.