CN112295117A

CN112295117A - Cobalt 60 gamma ray radiotherapy device

Info

Publication number: CN112295117A
Application number: CN202011251219.0A
Authority: CN
Inventors: 陈继红
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-02-02

Abstract

The invention relates to a cobalt 60 gamma ray radiotherapy device which comprises a radiotherapy body and a treatment bed, wherein a plurality of cobalt 60 gamma ray sources and collimators matched with the cobalt 60 gamma ray sources are arranged on the radiotherapy body, the cobalt 60 gamma ray sources are arranged on the same plane, and rays emitted by the cobalt 60 gamma ray sources after being collimated by the collimators are focused on a focus. Because the source focus is a plane point rather than a sphere, the source focus is easy to shield and control ray beams, is beneficial to protecting organs needing protection, is beneficial to adjusting the intensity, is more convenient to adjust the dosage intensity, can irradiate in a 360-degree full angle more accurately, and has a large treatment range and omnibearing treatment; the treatment is flexible, and a treatment plan is convenient to design; the tumor dose intensity is more accurately adjusted.

Description

Cobalt 60 gamma ray radiotherapy device

Technical Field

The invention belongs to the technical field of medical equipment, and particularly relates to a cobalt 60 gamma ray radiotherapy device.

Background

The tumor is a common frequently-occurring disease, the cobalt 60 gamma ray radiation therapy device is a common therapy device, also called a stereotactic gamma ray radiation therapy system, and is a therapeutic device integrating modern computer technology, stereotactic technology and surgical technology, the gamma ray radiation therapy device focuses the gamma ray emitted by cobalt 60 geometrically and focuses the gamma ray on the focus, and the tissue in target spot is destroyed in a disposable and lethal way, while the ray has almost no harm to the normal tissue of human body and has sharp dose reduction, so the therapeutic irradiation range is very obvious from the normal tissue boundary, the edge is as common as knife cutting, so the device is also called as 'gamma knife', the cobalt 60 gamma ray radiation therapy device utilizes the gamma ray emitted by cobalt 60 to focus on the tumor part of human body directionally, thereby destroying the tumor, the existing cobalt 60 gamma ray radiation therapy device comprises a radiation therapy body and a therapy bed, be provided with a plurality of cobalt 60 gamma ray sources on the radiation therapy body and with every cobalt 60 gamma ray source assorted collimator, a plurality of cobalt 60 gamma ray sources arrange on the partial spheroid of a cubical space, the ray that a plurality of cobalt 60 gamma ray sources sent after being collimated by the collimator from the cubical direction of space focuses on a focus, because the ray that a plurality of cobalt 60 gamma ray sources sent after being collimated by the collimator from the cubical direction of space focuses on a focus, the source focus is the spheroid, lead to the flexibility not strong, be difficult to shield control ray bundle, be unfavorable for protecting the organ that needs the protection, dose intensity adjustment is inconvenient also accurate inadequately.

Disclosure of Invention

The invention provides a cobalt 60 gamma ray radiotherapy device, which aims to solve the technical problems that the existing cobalt 60 gamma ray radiotherapy device is not strong in flexibility, is not easy to shield and control ray beams, is not beneficial to protecting organs to be protected, and is inconvenient and inaccurate in dose intensity adjustment.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a cobalt 60 gamma ray radiotherapy device comprises a radiotherapy body and a treatment bed, wherein a plurality of cobalt 60 gamma ray sources and collimators matched with the cobalt 60 gamma ray sources are arranged on the radiotherapy body, and the cobalt 60 gamma ray sources are arranged on the same plane and emit rays which are collimated by the collimators and then are focused on a focus.

The several cobalt 60 gamma-ray sources are arranged on the same circumference.

The several cobalt 60 gamma-ray sources are arranged on two different circumferences.

The plurality of cobalt-60 gamma ray sources are uniformly distributed on the radiotherapy body.

The radiotherapy body is an annular body.

The cobalt 60 gamma ray sources are divided into two groups, each group is arranged on the same plane, the planes where the cobalt 60 gamma ray sources are distributed in the two groups are parallel to each other, and rays emitted by the cobalt 60 gamma ray sources in each group after being collimated are respectively focused on respective focuses.

The number of the cobalt 60 gamma ray sources is one or more.

The treatment bed is a treatment bed capable of reciprocating.

After the technical scheme is adopted, the plurality of cobalt 60 gamma ray sources are arranged on the same plane, rays emitted by the plurality of cobalt 60 gamma ray sources after being collimated by the collimator are focused on a focus, and the source focus is a plane point rather than a sphere, so that ray beams are easily shielded and controlled, the protection of organs to be protected is facilitated, the adjustment of intensity is facilitated, the adjustment of dose intensity is more convenient, the irradiation is more accurate in a full angle of 360 degrees, the treatment range is large, and the treatment is omnibearing; the treatment is flexible, and a treatment plan is convenient to design; the tumor dose intensity is more accurately adjusted.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the cobalt 60 gamma ray radiotherapy device of the present invention.

FIG. 2 is a schematic structural diagram of a radiotherapy body in the cobalt 60 gamma ray radiotherapy device of the present invention.

The meanings of each mark in the figure are as follows: the radiation therapy device comprises a radiation therapy body 1, a treatment couch 2, a cobalt 60 gamma ray source 3, a shield 4, a collimator 5, a source seat 6 and a focus O.

Detailed Description

As shown in fig. 1 and 2, a cobalt 60 gamma ray radiotherapy device comprises a radiotherapy body 1 and a treatment couch 2 capable of reciprocating, wherein a plurality of cobalt 60 gamma ray sources 3 and collimators 5 matched with the cobalt 60 gamma ray sources 3 are arranged on the radiotherapy body 1, the beam diameter of a ray beam of the cobalt 60 gamma ray source 3 can be adjusted by adjusting the aperture of the collimator 5, the cobalt 60 gamma ray sources 3 are only arranged on the same plane, and rays emitted by the cobalt 60 gamma ray sources 3 after being collimated by the collimators 5 are focused on a focus O. The cobalt-60 gamma ray sources 3 are respectively arranged in the respective shielding bodies 4, the shielding bodies 4 are made of gamma ray shielding materials such as lead, the shielding bodies 4 are fixedly connected to the radiotherapy body 1 through the source holders 6, as shown in fig. 2, the cobalt-60 gamma ray sources 3 are arranged on two different circumferences, of course, the cobalt-60 gamma ray sources 3 can be arranged on only one circumference, and the cobalt-60 gamma ray sources 3 are uniformly distributed on the radiotherapy body 1. Of course, the non-uniform distribution can be performed according to the actual situation, the radiotherapy body 1 is a ring-shaped body, and the cobalt 60 gamma ray source 3 can be one or more.

Certainly, the cobalt 60 gamma ray sources 3 are divided into two groups, each group is arranged on the same plane, the planes of the two groups of cobalt 60 gamma ray sources 3 are parallel to each other, and the rays emitted by each group of cobalt 60 gamma ray sources 3 after being collimated are respectively focused on respective focal points O. Each set of cobalt 60 gamma-ray sources 3 is arranged on the same circumference.

Because the plurality of cobalt 60 gamma ray sources 3 are arranged on the same plane, rays emitted by the plurality of cobalt 60 gamma ray sources 3 after being collimated by the collimator 5 are focused on a focus O, and the source focus O is a plane point rather than a sphere, therefore, ray beams are easy to shield and control, the protection of organs needing to be protected is facilitated, the intensity adjustment is facilitated, the dose intensity adjustment is more convenient and accurate, 360-degree full-angle irradiation is achieved, the treatment range is large, and all-dimensional treatment is realized; the treatment is flexible, and a treatment plan is convenient to design; the tumor dose intensity is more accurately adjusted.

Claims

1. A cobalt 60 gamma ray radiotherapy device comprises a radiotherapy body and a treatment bed, wherein a plurality of cobalt 60 gamma ray sources and collimators matched with the cobalt 60 gamma ray sources are arranged on the radiotherapy body, and the cobalt 60 gamma ray sources are arranged on the same plane and emit rays which are collimated by the collimators and then are focused on a focus.

2. The cobalt 60 gamma ray radiation therapy device of claim 1, wherein said plurality of cobalt 60 gamma ray sources are arranged on the same circumference.

3. The cobalt 60 gamma ray radiation therapy device of claim 1, wherein said plurality of cobalt 60 gamma ray sources are arranged on two different circumferences.

4. The cobalt-60 gamma ray radiation therapy device of claim 1, wherein said plurality of cobalt-60 gamma ray sources are distributed evenly over said radiation therapy body.

5. The cobalt 60 gamma ray radiation therapy device of claim 1, wherein said radiation therapy body is an annulus.

6. The cobalt-60 gamma ray radiation therapy device according to claim 1, wherein said plurality of cobalt-60 gamma ray sources are divided into two groups, each group is disposed on the same plane, the planes of said two groups of cobalt-60 gamma ray sources are parallel to each other, and the radiation emitted from each group of cobalt-60 gamma ray sources after being collimated is focused on the respective focal points.

7. The cobalt 60 gamma ray radiation therapy device of claim 1, wherein said plurality of cobalt 60 gamma ray sources is one or more.

8. The cobalt 60 gamma ray radiation therapy device as claimed in any one of claims 1 to 7, wherein the treatment couch is a reciprocatable treatment couch.

9. The cobalt-60 gamma ray radiation therapy device according to claim 8, wherein each cobalt-60 gamma ray source is disposed within a respective shield, said shields being fixedly attached to said radiation therapy body by a source mount.