Siemens Aktiengesellschaft

Joerg Stein

Christopher Jude Amies

Jochen Kusch

Steffen Seeber

Mark G Wofford

Stefan Goelz

Stefan Gliessmann

John Juschka

Martin Kolb

Ajit Singh

Peter Hoban

Use of an adaptive radiation therapy framework includes determination of a radiation beam size, radiation beam shape, and radiation beam position for delivering at least a portion of a prescribed radiation dose to a target volume based on first image data of a patient, and selection of one radiation therapy process from an available first process and second process. The first radiation therapy process comprises acquisition of two dimensional image data of the patient, determination of a position offset based on the two-dimensional image data and on the first image data, and movement of the patient based on the position offset. The second radiation therapy process comprises acquisition of three-dimensional image data of the patient, determination of a second position offset based on the three-dimensional image data and on the first image data, and movement of the patient based on the second position offset.

System and method utilizing adaptive radiation therapy framework

The invention relates to a leaf () for a multi-leaf collimator () for delimiting a high-energy beam (&#x2033;) of an irradiation device, in particular for conformational radiation therapy. According to the invention, the multi-leaf collimator () comprises a plurality of opposing leaves (), which can be brought into the beam path (&#x2033;) by means of drives (), in such a way that the contour () of said path can be shaped in accordance with the volume to be irradiated. The need for beam-absorbent material () is reduced, as the leaf () essentially only comprises a beam-absorbent material () of an appropriate thickness () in a region () that is brought into the path (&#x2033;) of the high-energy beam () during the course of all possible positional displacements (). The invention also relates to a corresponding multi-leaf collimator (), a device () for delimiting beams, and an irradiation device.

Leaf, multi-leaf collimator, device for delimiting beams and irradiation device

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Concord, CA, United States of America

Joerg Stein