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Dose rate modulated stereotactic radio surgery

A dose rate, dose technique used in the field of radiotherapy or radiotherapy to solve problems such as inability to meet constraints

Active Publication Date: 2017-05-31
ELEKTA AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In those cases where the tumor is close to the critical OAR or the tumor has a non-circular shape, the operating arc arrangement alone may not satisfy the constraints

Method used

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  • Dose rate modulated stereotactic radio surgery
  • Dose rate modulated stereotactic radio surgery
  • Dose rate modulated stereotactic radio surgery

Examples

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Embodiment Construction

[0021] Exemplary embodiments are described with reference to the drawings. Wherever convenient, the same reference numbers will be used throughout the drawings to refer to the same or like parts. While examples and features of the disclosed principles are described herein, modifications, adaptations, and other implementations are possible without departing from the spirit and scope of the disclosed embodiments. Furthermore, the words "comprising," "having," "comprising," and "including" and other similar forms are intended to be equivalent in meaning and are open-ended, where any of these words follows either one or A number of items is not intended to be an exhaustive list of such item or items, or to be limited to only the item or items listed. And unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" include plural referents.

[0022] Systems and methods consistent with the present disclosure are directed to stereotactic radiosurgery (SRS)...

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PUM

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Abstract

The present disclosure relates to methods and systems for radiotherapy. Embodiments of the present disclosure may receive a medical image including images of a target and an organ at risk (OAR). Some embodiments may also receive a target dose and a constraint on an OAR dose. Some embodiments may also generate a dose application plan based on the target dose and the constraint. Generation of the dose application plan may include determining a placement of an arc along which radiation is to be applied based on the target dose and a location of the target; dividing the arc into a plurality of segments; determining a dose rate associated with each segment; calculating a predicted OAR dose based on the determined dose rate; and comparing the predicted OAR dose with the constraint on the OAR dose to determine whether the predicted OAR dose satisfies the constraint on the OAR dose.

Description

technical field [0001] The present disclosure generally relates to radiation therapy or radiotherapy. More specifically, the present disclosure is directed to systems and methods for dose planning in radiation therapy. Background technique [0002] Radiation therapy is used to treat tumors in mammalian tissues such as the brain. Stereotactic radiosurgery (SRS) is one such radiation therapy technique by which high doses of radiation are delivered with high precision during short-term treatment of lesions positioned relative to a three-dimensional reference system. During SRS, multiple radiation beams are directed towards a target, such as a tumor, from different angles. These radiation beams converge at the isocenter. The tissue located at the isocenter receives a high dose, while the surrounding area receives a relatively low dose. Therefore, for an SRS system, it is critical to deliver the dose to a zone that conforms to the shape of the target. In this way, the target...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10
CPCA61N5/1031A61N5/1084A61N5/1039A61N5/1071A61N2005/1095A61N5/1077
Inventor 布雷特·马修·斯洛曼
Owner ELEKTA AB
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