Four-dimensional automatic scan method of measuring complex/dynamic dose field, and four-dimensional automatic scan water tank system

Abstract

The invention discloses a four-dimensional automatic scan method of measuring a complex / dynamic dose field, and a four-dimensional automatic scan water tank system. The four-dimensional automatic scan water tank system mainly includes a motion control unit, a dose measuring unit, an automatic self-positioning unit, computer application software, a case, a supporting rod, a water tank, etc. Compared with conventional water tanks, the system has the following advantages: 1) four-dimensional measuring control software is designed to achieve a new four-dimensional measuring function; 2) a linear array and a flat-panel detector are utilized to improve the measuring efficiency; 3) the system is provided with a water tank automatic self-positioning auxiliary device, so the self-positioning efficiency is increased; and 4) the water tank and an accelerator interface communicate with each other, so the measuring efficiency is increased. The system is capable of measuring complex and (or) dynamic dose fields, is a significant measuring tool for research and development of novel ray devices and novel irradiation technologies and for applications of the device and technologies, and also provides a more accurate platform for discussion of organ motion influence and other scientific issues.

Description

technical field [0001] The invention relates to the field of precise radiation dose measurement in radiation physics, in particular to a four-dimensional automatic scanning method and a water tank system for measuring complex / dynamic dose fields. Background technique [0002] According to the 2013 statistics released by the National Cancer Center, there are 3.37 million new cancer cases and 2.11 million cancer deaths in my country every year, and the number of cancer cases and deaths continues to rise. At present, radiotherapy is an important means of treating cancer, about 60%- 70% of cancer patients received radiation therapy to varying degrees. In the process of modern clinical radiotherapy, in order to ensure that radiotherapy patients are treated accurately according to the plan, strict quality assurance (quality control) must be carried out on radiotherapy equipment, and quality assurance (quality control) is inseparable from the automatic scanning water tank measuremen...

AI Technical Summary

Problems solved by technology

[0006] 1) It can only measure simple static dose fields, such as percent depth dose (PDD), cross-sectional (Profile) measurement at a specific depth in water, etc., and the measurement function is single

[0007] 2) Radiation detectors are usually point detectors, which can only measure the dose of one point at a time, and obtain all the required data by step scanning or continuous measurement, and the measurement efficiency is low.

[0008] 3) The process of positioning the water tank is complicated, time-consuming and labor-intensive

[0009] 4) There is no communication between the water tank and the radiation device or radioactive source, and manual coordination is required to complete the measurement. The operation process is complicated and cumbersome, which is not only time-consuming but also error-prone

[0010] It is precisely because of these shortcomings that the actual utilization rate of the water tank in the equipped unit is extremely low

In addition, with the development of precise radiotherapy technology, it is urgent to conduct detailed research on the law of organ movement on tumors and fast and accurate dose verification, and to develop effective technologies that can improve radiotherapy accuracy. None of them can meet the measurement requirements of complex / dynamic dose field

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