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Honeycomb-type collimator for X-ray pencil beam scanning intensity modulation radiation therapy

An intensity-modulated therapy and collimator technology, which is applied in X-ray/γ-ray/particle irradiation therapy, treatment, radiotherapy, etc., can solve the problems of large field of radiation and cannot meet the requirements of clinical intensity-modulated radiation therapy, and achieve half the reduction The effect of height and width

Active Publication Date: 2019-03-19
胡逸民
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Problems solved by technology

However, although the optimized design of the electron beam target material, target thickness, and electron beam energy has been adopted, the Full Width Half Maximum (FWHM) of the X-ray pencil beam after the conventional electron beam target is in the source axis The source to axis distance (SAD) is about 3cm-5cm, which is too large for intensity-modulated pencil beam scanning, which cannot meet the needs of clinical intensity-modulated radiation therapy

Method used

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  • Honeycomb-type collimator for X-ray pencil beam scanning intensity modulation radiation therapy
  • Honeycomb-type collimator for X-ray pencil beam scanning intensity modulation radiation therapy
  • Honeycomb-type collimator for X-ray pencil beam scanning intensity modulation radiation therapy

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Embodiment Construction

[0030] Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with exemplary embodiments, it will be understood that present description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments but also various alternatives, modifications, equivalents and other alternatives, modifications, equivalents and others, which may be included within the spirit and scope of the invention as defined by the appended claims. implementation plan.

[0031] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] See attached image 3 , the high-energy incident electron beams passing through the scanning magnet 50 along the A-B direction and the G-T directi...

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Abstract

The invention relates to a honeycomb-type collimator for X-ray pencil beam scanning intensity modulation radiation therapy. The honeycomb-type collimator consists of all-blank collimator units and full-gear collimator units, wherein the all-blank collimator units can make X-rays pass through the all-blank collimator units, the transmissivity of the full-gear collimator units is not greater than 3%so that the X-rays cannot pass through the full-gear collimator units, four side end faces of each all-blank collimator unit are designed into trapezoid end faces traced to the target center (point)of an X-ray source so as to form four-faced focusing. The all-blank collimator units and the full-gear collimator units are arranged in the way similar to a bidimensional checkerboard to form a honeycomb-type collimator set. According to each all-blank collimator unit in the honeycomb-type collimator set, each X-ray pencil beam entering the all-blank units can be further collimated, so that the full width at half maximum of each beam is reduced to 3-8 mm.

Description

technical field [0001] The invention relates to a honeycomb collimator for X-ray pencil beam scanning intensity modulation radiotherapy (X-PBS-IMRT) . Background technique [0002] Cancer has become the main killer that endangers human health, and it is one of the main diseases that threaten the health of our country. At present, radiation therapy is still one of the main means of treating malignant tumors, and about 65%-70% of tumor patients need to receive radiation therapy to varying degrees. [0003] At present, tumor radiation therapy technology has entered the era of 3D therapy from the era of 2D radiation therapy, and three-dimensional conformal radiation therapy (3D-CRT) and intensity-modulated radiation therapy (IMRT), stereotactic radiation therapy (such as X-knife, Gamma knife (γ-knife) technology, etc., has entered the era of precise treatment characterized by intensity-modulated radiation therapy (IMRT) and guaranteed by image-guided technology (IGRT), which h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10
CPCA61N5/10A61N5/1031A61N5/1042A61N5/1048A61N2005/1092
Inventor 胡逸民
Owner 胡逸民
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