US 8,772,742 B2Granted

Radiation therapy system and method for adapting an irradiation field

AssigneeSiemens Aktiengesellschaft

InventorEike Rietzel

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Abstract

A radiation therapy system for irradiating a target volume with a particle beam is provided. The radiation therapy system includes a radiation source that is operable to output an adjustable irradiation field that includes a particle beam that is scanned point by point over the target volume. A 3D imaging device may obtain a 3D radiation treatment data set in a radiation treatment phase. An adaptation unit adapts the irradiation field to a change in position and/or shape of the target volume in the radiation treatment phase. The adaptation unit compares the 3D radiation treatment data set with a 3D planning image data set furnished and obtains a transformation that describes the change in position and/or shape of the target volume. The adaptation unit transforms an irradiation field based on the transformation.

Claims8

Dependent claims

A method for adapting an irradiation field for a radiation treatment procedure on a target volume that is irradiated with a particle beam by scanning a particle beam point by point over the target volume, a position of the target volume, a shape of the target volume, or the position and the shape of the target volume being changeable over time, the method comprising:

obtaining a three-dimensional (3D) planning image data set and the irradiation field, which have been planned by the association of doses to be applied successively with volume elements of the target volume on the basis of the 3D planning image data set,
obtaining a 3D radiation treatment data set in a radiation treatment phase, the 3D radiation treatment data set reproducing the target volume to be irradiated,
registering the target volume in the 3D planning image data set and the 3D radiation treatment data set to obtain a transformation that describes a change in position, shape, or position and shape of the target volume, and
adapting, as a function of the transformation, the irradiation field from the planning to the target volume in the radiation treatment phase,
wherein a three-dimensional position of the doses to be successively applied is transformed as a function of the transformation.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/899,805Filed 7 Sep 2007 · us provisional application
Priority: DE 10 2006 044 13915 Sep 2006
Published: US 2008/0071131 A120 Mar 2008
Granted: 8 Jul 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

A61N 5/1071
Monitoring, verifying, controlling systems and methods: for verifying the dose delivered by the treatment plan
A61N 5/103
X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy: treatment planning systems
A61N 5/1043
With spatial modulation of the radiation beam within the treatment head: scanning the radiation beam, e.g. spot scanning or raster scanning
A61N 5/1048
X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy: monitoring, verifying, controlling systems and methods

Family

Application60/845,030Us provisional application · filed 15 Sep 2006
US 2008/0071131 A1Pre-grant publication · published 20 Mar 2008
US 8,772,742 B2This patent

From the US filing history. Foreign family members aren’t listed.

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