Patent Number: 6,670,618

Title: Method of checking an isocentre and a patient-positioning device of an ion beam therapy system

Abstract: The present invention relates to a method of checking an isocentre and a patient-positioning device 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 onto an isocentre of the irradiation site, and a specific area surrounding the isocentre is scanned, wherein a check of the isocentre and a patient-positioning device is carried out and the patient-positioning device comprises a patient table rotatable about an axis of rotation of the table. For the checking, a target point within a spherical phantom is represented by means of a special specimen body and the centre point of the specimen body is visibly represented by means of several image-forming methods. On departure of the measurement results in respect of the spatial position of the centre point under the image-forming methods from a predetermined intervention threshold, the ion beam therapy system is subjected to an inspection and/or maintenance.

Inventors: Hartmann; Gunther (Darmstadt, DE), Heeg; Peter (Darmstadt, DE), Jaekel; Oliver (Darmstadt, DE), Karger; Christian (Darmstadt, DE)

Assignee: Gesellschaft fuer Schwerionenforschung mbH

International Classification: A61N 5/10 (20060101); A61B 19/00 (20060101); G01N 023/00 ()

Expiration Date: 12/30/2020