Method and apparatus for modulating a radiation beam

A radiotherapy and controller technology, applied in radiodiagnostic instruments, radiotherapy, X-ray/γ-ray/particle irradiation therapy, etc.

Inactive Publication Date: 2008-11-19
帕特里克·F·卡德曼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The Co-60 radiation therapy machine has not been retrofitted with MLC and the Co-60 radiation therapy machine is not currently capable of performing MLC-based IMRT

Method used

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  • Method and apparatus for modulating a radiation beam
  • Method and apparatus for modulating a radiation beam
  • Method and apparatus for modulating a radiation beam

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Embodiment Construction

[0025] Before all embodiments of the invention are described in detail, it is to be understood that the invention is not limited in application to the details of construction and arrangement of components set forth in the following description or shown in the following drawings. The invention is capable of other embodiments and of being practiced or carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. The use of "comprising", "comprising" or "having" and variations thereof herein is intended to include the items listed thereafter and equivalents of said items, as well as additional items. Unless stated or limited otherwise, the terms "mount", "connect", "support" and "couple" and variations thereof are used broadly and include direct and indirect mounting, connecting, supporting and coupling. Furthermore, "connected" and "coupled" are not limited to...

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Abstract

An apparatus and method to deliver intensity modulated radiation therapy by irradiating a treatment volume with rotation of the radiation beam. The system includes a collimation device comprising a two-dimensional array of pivoting attenuating leaves, which are temporarily placed into the radiation beam path as the gantry rotates around the patient. The leaves are independently movable between a first position and a second position. The radiation beam intensity is modulated by controlling the time that each leaf is present to attenuate the beam.

Description

[0001] related application [0002] This application claims priority to US Provisional Patent Application No. 60 / 657,013, filed February 28, 2005, which is hereby incorporated by reference in its entirety. Background technique [0003] Intensity Modulated Radiation Therapy ("IMRT") involves altering the size, shape and intensity of a radiation beam to suit the size, shape and location of a patient's tumor. IMRT precisely targets the tumor while sparing surrounding normal tissue. In general, IMRT is performed using a radiation therapy system configured with a radiation source and a linear accelerator ("linac"). A radiation beam exiting a linear accelerator is passed through a multi-leaf collimator ("MLC") to modify the size, shape and intensity of the beam. [0004] Before the development of linear accelerators, radiation therapy machines used cobalt-60 ("Co-60") as the radiation source. The Co-60 radiation therapy machine uses simple and reliable technology that has been ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10G21K1/04
CPCG21K1/04G21K1/046A61N5/1042A61B6/00A61N5/10A61N5/00
Inventor 帕特里克·F·卡德曼
Owner 帕特里克·F·卡德曼
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