Brainlab Ag

Franz Gum

Stephan Froehlich

Kajetan Berlinger

Stephan Erbel

The present invention relates to a data processing method for determining control data for controlling beam positions which beam positions describe positions which a treatment beam has or would have if emitted by a beam source, the treatment beam being for treating a treatment body part of a patient, said method constituted to be performed by a computer and comprising the steps of: .cndot. providing treatment data which comprise data on a position of the treatment body part; .cndot. providing condition data which describe: constraints on the beam positions and/or constraints on positional changes of the beam positions, wherein said constraints allow for at least a part of the beam positions to lie not in a common plane; .cndot. providing an arrangement of the beam positions on the basis of the treatment data which arrangement fulfills the condition data; .cndot. determining control data for controlling a change of a relative position of the beam source relative to the treatment body part for changing the beam positions and for controlling an emission of the treatment beam from the beam source, the determined control data being constituted to change the beam positions to follow the provided arrangement of the beam positions and to cause continuous emission of the treatment beam during a continuous change of the beam positions while the beam positions follow at least a part of the arrangement.

Treatment beam control

The present invention relates to a data processing method for determining control data for controlling beam positions which beam positions describe positions which a treatment beam has or would have if emitted by a beam source, the treatment beam being for treating a treatment body part of a patient, said method constituted to be performed by a computer and comprising the steps of: &#x2022; providing treatment data which comprise data on a position of the treatment body part; &#x2022; providing condition data which describe: constraints on the beam positions and/or constraints on positional changes of the beam positions, wherein said constraints allow for at least a part of the beam positions to lie not in a common plane; &#x2022; providing an arrangement of the beam positions on the basis of the treatment data which arrangement fulfils the condition data; &#x2022; determining control data for controlling a change of a relative position of the beam source relative to the treatment body part for changing the beam positions and for controlling an emission of the treatment beam from the beam source, the determined control data being constituted to change the beam positions to follow the provided arrangement of the beam positions and to cause continuous emission of the treatment beam during a continuous change of the beam positions while the beam positions follow at least a part of the arrangement.

Non-planar treatment beam control

The present invention refers to a data processing method for use in the field of radiation therapy and for determining a relative position between the position of the bony structure and a reference position at a monitoring time, the relative position being referred to as monitoring bone position, wherein an anatomical structure of a patient includes the bony structure and a treatment body part to be treated by at least one treatment beam of a treatment device, the reference position having a defined relative position with respect to an actual arrangement of at least one position of the at least one treatment beam; the data processing method being constituted to be performed by a computer and comprising the following steps: &#x2022;providing CBCT image data describing a three-dimensional CBCT image of the bony structure, the CBCT image representing the bony structure at a pre-alignment time; &#x2022;providing x-ray image data describing at least one two-dimensional x-ray image of the anatomical structure, the at least one two-dimensional x-ray image representing the bony structure () and the x-ray image data being generated at the monitoring time; &#x2022;providing imaging position data comprising at least one of CBCT position data and x-ray geometry data, CBCT position data describing the relative position between the CBCT image and the actual arrangement and the x-ray geometry data describing a positional relationship between the actual arrangement and at least one imaging geometry, referred to as x-ray imaging geometry, given for generating the at least one x-ray image; &#x2022;determining the relative position between the bony structure and the reference position at the monitoring time on the basis of the CBCT image data, the x-ray image data and the imaging position data.

Determination of a change of position of a bony structure in radiation therapy

The present invention relates to a data processing method for use in the field of radiation therapy and for determining a position of a treatment body part relative to an actual arrangement of at least one position of a treatment beam issued by a treatment device, the position being called monitoring tissue position and the treatment body part being a soft tissue part of an anatomical structure of a patient; the data processing method being constituted to be performed by a computer and comprising the following steps: &#x25cf; providing CBCT data describing a three-dimensional CBCT image of the anatomical structure, the three dimensional CBCT image representing the treatment body part and a bony structure in a relative position to each other, called tissue-bone pre-alignment position, at a point in time, called pre-alignment time; &#x25cf; providing x-ray data describing information on a position of the bony structure, called monitoring bone position, relative to the actual arrangement at a point in, time during treatment, called monitoring time, the monitoring time being after the pre-alignment time; &#x25cf; determining the monitoring tissue position of the treatment body part relative to the actual arrangement &#x2218; based on the tissue-bone pre-alignment position represented by the CBCT image data, &#x2218; based on the information on the monitoring bone position described by the x-ray data, and &#x2218; based on a predefined relationship between a first relative position between the treatment body part and the bony structure at the pre-alignment time and a second relative position between the treatment body part and the bony structure at the monitoring time.

Determination of a body part position during radiation therapy

The present invention relates to a method for positioning an arrangement of at least one beam position relative to a patient's body when the patient is placed for treatment by means of a treatment device which can emit treatment radiation, wherein the at least one beam position describes at least one position of at least one treatment beam, wherein the arrangement is referred to as the treatment arrangement and the treatment beam comprises the treatment radiation, wherein the method is executed by a computer and comprises the following steps:

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Munich, Germany

Franz Gum