Dosage monitoring device and linear accelerator

A monitoring device and dose technology, applied in the directions of X-ray/γ-ray/particle irradiation therapy, radiotherapy, treatment, etc., can solve the problems of complex assembly process and high process requirements, and achieve simplified structure, improved reliability and simplified assembly. and the effect of the maintenance process

Inactive Publication Date: 2018-10-16
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, in order to ensure the airtightness of the ionization chamber with a closed structure, the assembly process is relatively complicated. After assembly, it needs to carry out processes such as inflation, sealing, and leak detection, which have high requirements on the process.

Method used

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  • Dosage monitoring device and linear accelerator
  • Dosage monitoring device and linear accelerator
  • Dosage monitoring device and linear accelerator

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Embodiment Construction

[0023] 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.

[0024] 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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Abstract

The invention provides a dosage monitoring device which comprises an ionization chamber, a temperature sensor, an air pressure sensor and a computing unit. A non-closed cavity is defined inside the ionization chamber. The temperature sensor collects environment temperature of the ionization chamber. The air pressure sensor collects environment air pressure of the ionization chamber. The computingunit is configured to determine a correction factor according to the environment temperature and the environment air pressure, wherein the correction factor is used for correcting a dosage value detected by the ionization chamber. The dosage monitoring device can be used for the linear accelerator.

Description

technical field [0001] The invention mainly relates to radiotherapy equipment, in particular to a dose monitoring device of a 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 controlling the output dose of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10
CPCA61N5/1071A61N5/1075A61N2005/1092
Inventor 李贺章卫傅费超高延龙
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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