Siemens Medical Systems, Inc.

Siemens Aktiengesellschaft

Siemens Medical Solutions Usa, Inc.

Mark G Wofford

Francisco Miguel Hernandez-Guerra

Christopher Jude Amies

Jochen Kusch

Todd Howard Steinberg

Randall V Tarr

Joseph Scott Saba

Stefan Gliessmann

Joerg Stein

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

A method and system in accordance with the present invention uses the existing hardware and divides the treatment port dose into segments. In between each segment the field, with respect to the beam, would be translated, and the leaf positions would be adjusted to maintain the tumor contour. By integrating the above-identified methodology with a hardware system, accurate conformal radiation therapy is provided while minimizing leakage. In addition, through the present invention, higher dose rates can be provided while not appreciably affecting treatment time.

Integrated high definition intensity multileaf collimator system which provides improved conformal radiation therapy while minimizing leakage

The present invention relates to a system and method for calibrating a radiation therapy device, such as a collimator. A method for calibrating a collimator according to an embodiment of the present invention is presented. The method comprises moving a leaf of a collimator; determining whether a distance between the leaf and a line approximately equals a predetermined measurement; and associating the predetermined measurement with a collimator specific count if the distance between the leaf and the line approximately equals the predetermined measurement.

System and method for automatic calibration of a multileaf collimator

According to an embodiment of the present invention, an isocenter of an image may be found by using a multi-leaf collimator. According to this embodiment, a center leaf is projected into the center of the x-ray field with all other leaves retracted. An image is acquired. A line through the center of the center leaf is identified. This line is also a line through isocenter. Another method according to an embodiment of the present invention for finding isocenter uses an accessory. The accessory according to an embodiment of the present invention includes a metal marker in the center of the accessory with metal markers interspersed away from the center at a predetermined interval. An image may be acquired through the accessory, with the patient on the table. The resulting image may be analyzed to identify the position of the metal markers to determine isocenter.

Isocenter localization using electronic portal imaging

A graphical user interface (,) for use in a patient treatment system. The graphical user interface (,) permits graphical display and editing of individual treatment parameters, including machine (,) positions and field shapes. Multiple fields grouped sequentially as an intensity modulated field (IMG) may be viewed as a superimposed graphical composite (,). In addition, a pictorial representation of the radiation beams (,) incident on a particular target is provided. A graphic representation of field shape (,) is provided; the graphics change as treatment progresses. Finally, manipulation of graphics permits editing of treatment information, while allowing immediate feedback as to the result of the change.

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Concord, CA, United States of America

Mark G Wofford