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Method for monitoring an isocentre and a positioning device for patients, said positioning device and isocentre pertaining to an ion-beam therapy system
Method for monitoring an isocentre and a positioning device for patients, said positioning device and isocentre pertaining to an ion-beam therapy system
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机译:用于监视患者的等中心线的方法和定位设备,所述定位设备和等中心线属于离子束治疗系统
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摘要
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.
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