Three-dimensional dosage inversion method

Abstract

A three-dimensional dosage inversion method is disclosed. In the method, two-dimensional dosage acquired by measuring out of a die body is inversed so as to obtain the three-dimensional dosage in the die body; through a dosage guiding plan, the irradiation dosage can be guaranteed to be consistent with the plan dosage. The method can be used in radiation dosage calculating, three dimensional dosage measurement, a dosimetry verification and quality guarantee direction which belong to an interdisciplinary field, such as nuclear physics, a nuclear technology and application and the like. The three dimensional dosage in the irradiated die body can be accurately and rapidly acquired. By using a traditional point measurement or two-dimensional measurement, the three dimensional dosage in the die body can be hardly reflected. By using the method of the invention, the above problem can be solved. Besides, through error feedback of real time dosage reconstruction, controlling flux of a radioactive source and guiding the radioactive source to carry out accurate irradiation with quality assurance according to a plan, implement of the accurate guiding irradiation plan can be realized.

Description

technical field [0001] The invention relates to a three-dimensional dose inversion method, and relates to radiation dose calculation, three-dimensional dose measurement, dosimetry verification and quality assurance directions in multidisciplinary interdisciplinary fields such as nuclear physics, nuclear technology and application. Background technique [0002] In the calculation of radiation dose, the traditional method may not be consistent with the actual situation because of the lack of acquisition of actual flux. In the process of irradiating the actual phantom, it is difficult for the existing measurement equipment to obtain the flux of the actual radiation source, which is generally realized by simulation or estimation, so it is difficult to apply to the actual situation; or it is measured under the condition of no phantom irradiation Obtain the flux of the radioactive source and then calculate the radiation dose, but in this case, it cannot reflect the three-dimension...

AI Technical Summary

Problems solved by technology

In the process of irradiating the actual phantom, it is difficult for the existing measurement equipment to obtain the flux of the actual radiation source, which is generally realized by simulation or estimation, so it is difficult to apply to the actual situation; or it is measured under the condition of no phantom irradiation Obtain the flux of the radioactive source and then calculate the radiation dose, but in this case it cannot reflect the three-dimensional dose of the actual complex phantom's exposure

In addition, in terms of dosimetry measurement and dosimetry verification, traditionally used simple dosimetry measurement equipment and verification methods, including film, thermoluminescence, ionization chamber, amorphous silicon flat plate and other measurement equipment, belong to two-dimensional or point dose measurement and dose measurement. It is also difficult to be used for 3D dosimetry and dosimetry verification of real phantoms

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