Multi-channel ionization chamber of medical linear accelerator, and collecting electrode thereof

Abstract

The invention provides a collecting electrode of a multi-channel ionization chamber of a medical linear accelerator. The collecting electrode comprises a first collecting part, multiple second collecting parts and a protective ring; the first collecting part is positioned in the centre; the multiple second collecting parts surround the first collecting part on the plane; the multiple second collecting parts are separated from the first collecting part; and the protective ring is provided with a first part surrounding the periphery of the multiple second collecting parts on the plane and a second part for separating any two adjacent collecting parts. The invention further provides the multi-channel ionization chamber of the medical linear accelerator.

Description

technical field

[0001] The invention mainly relates to radiotherapy equipment, in particular to an ionization chamber and a collecting pole of a medical linear accelerator. Background technique

[0002] Systems for emitting beams of high energy radiation, such as linear accelerators, can be used in areas such as delivering radiation therapy. For example, a linac emits a cone of radiation, which may be a beam of electrons or a beam of photons (eg, X-rays). When used to deliver radiation therapy, the emitted beam is conformed to substantially the shape of the diseased tissue so that side effects on surrounding healthy tissue are minimized. In radiation therapy, patients with different conditions usually have different dosage prescriptions. Smaller dosages will lead to poor therapeutic effects, and larger dosages will have safety risks. Therefore, the accuracy of dosage is very important. Usually, the ionization chamber is used as the main component for monitoring and control...

Examples

Embodiment Construction

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application, and those skilled in the art can also apply the present application to other similar scenarios. Unless otherwise apparent from context or otherwise indicated, like reference numerals in the figures represent like structures or operations.

[0022] As indicated in this application and claims, the terms "a", "an", "an" and / or "the" do not refer to the singular and may include the plural unless the context clearly indicates an exception. Generally speaking, the terms "comprising" and "comprising" only suggest the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and ...

technical field

[0001] The invention mainly relates to radiotherapy equipment, in particular to an ionization chamber and a collecting pole of a medical linear accelerator. Background technique

[0002] Systems for emitting beams of high energy radiation, such as linear accelerators, can be used in areas such as delivering radiation therapy. For example, a linac emits a cone of radiation, which may be a beam of electrons or a beam of photons (eg, X-rays). When used to deliver radiation therapy, the emitted beam is conformed to substantially the shape of the diseased tissue so that side effects on surrounding healthy tissue are minimized. In radiation therapy, patients with different conditions usually have different dosage prescriptions. Smaller dosages will lead to poor therapeutic effects, and larger dosages will have safety risks. Therefore, the accuracy of dosage is very important. Usually, the ionization chamber is used as the main component for monitoring and control...

Examples

Embodiment Construction

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application, and those skilled in the art can also apply the present application to other similar scenarios. Unless otherwise apparent from context or otherwise indicated, like reference numerals in the figures represent like structures or operations.

[0022] As indicated in this application and claims, the terms "a", "an", "an" and / or "the" do not refer to the singular and may include the plural unless the context clearly indicates an exception. Generally speaking, the terms "comprising" and "comprising" only suggest the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and ...

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