Particle therapy rapid quality assurance measurement method and dose distribution measurement device

Abstract

The invention relates to the field of particle therapy, in particular to a particle therapy rapid quality assurance measuring method and a dose distribution measuring device.The device comprises a plurality of luminescent material units, and the luminescent material units are sequentially arranged in the incident direction of a particle beam; the light signal acquisition unit is arranged corresponding to the light-emitting material unit and is used for acquiring light signals emitted by interaction of the particles and the light-emitting material unit; and the signal acquisition and data processing unit is used for acquiring the optical signals of the optical signal acquisition unit and processing the optical signals to obtain dose distribution. According to the invention, accurate, rapid, convenient, efficient and real-time particle therapy QA measurement can be realized, a powerful means is provided for particle radiotherapy basic data acquisition, regular beam performance detection and verification, dose verification of a patient treatment plan and the like, the efficiency of particle therapy is improved, and the method can be widely applied to other fields of particle radiation.

Description

technical field [0001] The invention relates to a particle therapy rapid quality assurance measurement method and a dose distribution measurement device, and relates to the technical field of particle therapy (including proton therapy, heavy ion therapy, neutron capture therapy, etc.). Background technique [0002] Particle therapy is an advanced and effective means of radiation therapy. In order to ensure the safe and effective implementation of particle therapy, it is necessary to regularly conduct QA (quality assurance) measurements on the particle beam current and irradiation field provided by the particle therapy accelerator, so as to ensure that the beam provided by the particle therapy accelerator The flow can meet the requirements of disease treatment and ensure that the particle radiation therapy plan can be executed accurately. Therefore, there is a need to develop QA measurement methods to meet the needs of particle clinical therapy. Due to the expensive equipmen...

AI Technical Summary

Problems solved by technology

This method has high accuracy, but each measurement can only measure the dose at one position in the water tank space, and it takes a long time to obtain a complete dose distribution, which is inefficient and does not have real-time performance, and the measurement is time-consuming and labor-intensive.

The film measurement method can measure the dose distribution in the vertical and horizontal directions of the particle beam, usually relative dose measurement, which can determine the beam spot size, the uniformity and symmetry of the irradiation field and other indicators. The disadvantage is that the film cannot be reused, the cost is high, and the obtained The post-processing time of the required information is long, and it is also not real-time

The two-dimensional ionization chamber matrix is ​​usually used for real-time measurement of the dose distribution in the transverse direction of the particle beam. The measurement speed is fast and the efficiency is high, but the position resolution is low, and the dose distribution in the longitudinal direction cannot usually be measured.

The scintillator detector uses the particle beam to deposit energy in the scintillator material to cause the scintillator material to emit light, uses the camera to detect the light signal and converts the light intensity into a dose distribution, and realizes the measurement of the dose distribution, with fast measurement speed and high resolution , It is more convenient to use, and can measure the beam spot size, the uniformity of the irradiation field, that is, the symmetry, etc., but the measurable indicators of this method are limited

The depth dose distribution detection equipment can be used to measure the longitudinal dose distribution, and can quickly measure the complete longitudinal dose distribution. The disadvantage is that it cannot measure the dose distribution of the particle beam in the transverse direction, and can only measure the depth dose distribution to determine the beam energy.

[0004] In summary, the current QA measurement methods for particle therapy have different shortcomings and deficiencies in terms of measurement accuracy, resolution, efficiency, convenience, real-time performance, and comprehensiveness of measurement indicators.

Therefore, in the current QA measurement of particle therapy, various measurement methods are often used to achieve a comprehensive measurement of QA indicators, so the current QA measurement of particle therapy is time-consuming and inefficient, making particle therapy poor in accessibility

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