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Novel radioactive source ray focusing collimator

A ray focusing and collimator technology, which is applied in the field of collimators, can solve the problems of excessive dose, small dose gradient, and inability to satisfy the dose rate and dose gradient at the same time, achieving improved gradient, simple structure, Guaranteed effect of radiation dose rate

Pending Publication Date: 2018-08-21
上海伽玛星科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure cannot satisfy the two requirements of dose rate and dose gradient well at the same time
When the opening is too large, a sufficiently high dose rate can be guaranteed, but the dose gradient becomes smaller, and the dose received outside the irradiation treatment area is too large

Method used

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  • Novel radioactive source ray focusing collimator
  • Novel radioactive source ray focusing collimator
  • Novel radioactive source ray focusing collimator

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Experimental program
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Embodiment Construction

[0020] The present invention will be further described below in combination with specific embodiments and accompanying drawings.

[0021] Such as Figure 1 to Figure 7 As shown, a novel radioactive source ray focusing collimator includes a collimator body 1, and the collimator body 1 is cylindrical. The end surface of the collimator body 1 is provided with a plurality of tapered holes 2 with the same specifications, and the diameter of the tapered holes 2 gradually decreases from the upper end surface to the lower end surface of the collimator body 1 . A tapered tubular focusing device 3 is embedded in the tapered hole 2 . The taper holes 2 are divided into a plurality of rings centered on the center of the end face of the collimator body 1, preferably three rings, the distance between each ring is equal, and the taper holes 2 of each ring are evenly distributed. The center of the end face of the collimator body 1 is the first ring layer, and the first ring layer is provided...

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PUM

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Abstract

The invention discloses a novel radioactive source ray focusing collimator. The novel radioactive source ray focusing collimator comprises a collimator body, the collimator body is cylindrical, multiple tape holes of consistent specifications are formed in the end face of the collimator body, tape pipe-shaped focusing devices are embedded in the tape hole, each tape hole is divided into multiple ring layers with the center of circle of the end face of the collimator body being the center, the distances among all the ring layers are the same, and the tape holes of all the ring layers are uniformly distributed. The novel radioactive source ray focusing collimator is simple in structure and reasonable in design, and the gradient of the illumination dose field is increased while the illumination dose rate is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of collimators for cobalt-60 stereotaxic radiotherapy equipment for tumors, and in particular relates to a novel radiation source ray focusing collimator. Background technique [0002] Radiation therapy is an important part of cancer treatment therapy. Gamma Knife is a medical device that uses gamma rays emitted by cobalt-60 radiation sources to treat tumors. According to clinical needs, the rays of the Gamma Knife need to be focused so that the dose field has a sufficient dose rate and a sufficiently large dose gradient to ensure sufficient dose rate irradiation in the irradiated treatment area, and at the same time, the dose outside the irradiated treatment area is sufficient Low. The ray collimator is a key component for focusing the ray, and it is installed under the Gamma Knife head. The ray collimators currently used in the industry are hole-shaped structures that go straight up and down. This stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10
CPCA61N5/103A61N5/1042A61N5/1048A61N5/1077A61N2005/1092
Inventor 张文山
Owner 上海伽玛星科技发展有限公司
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