Proton therapy monitoring method, device and system based on neural network

Abstract

The invention relates to a proton therapy monitoring method, device and system based on a neural network. The proton therapy monitoring method based on the neural network comprises the steps that according to a three-dimensional body model built in advance, a tumor lesion area is determined; after a proton beam shines the tumor lesion area, positive electron nuclide is measured in preset time to obtain distributed information of the positive electron nuclide; according to the distributed information, an image reconstruction algorithm is adopted to build a PET image; the PET image is input to a built neural network regression model and a neural network classification model, and dose distribution and range of the proton beam are determined; the position of a prague peak is determined according to the dose distribution and range; whether the position of the prague peak and the dose distribution conform to the preset proton therapy requirement or not is detected; and if not, beam out parameters of the proton beam are adjusted. By adopting the technical scheme of the proton therapy monitoring method based on the neural network, the influence of breathing and exercising of human body organs on the measurement can be reduced, the range of protons and the precision of the dose distribution are improved, and the accuracy of proton therapy is improved.

Description

technical field [0001] The invention relates to the technical field of nuclear medicine imaging, in particular to a neural network-based proton therapy monitoring method, device and system. Background technique [0002] Proton therapy is a cutting-edge radiotherapy technology for precise treatment of malignant tumors (cancer). During proton therapy, the irradiation dose curve of proton beams in the human body rises slowly at first, and then gradually increases until the maximum dose deposition occurs at the Bragg peak. Then the curve drops rapidly and tends to zero. The Bragg peak characteristic of the proton beam can make the tumor tissue receive the maximum irradiation dose, and at the same time, it can prevent the normal organs behind the tumor tissue from being damaged by radiation, and reduce the side effects of treatment. [0003] The advantages of proton therapy are as follows: 1) The dose at the proton Bragg peak is three to four times higher than the dose just ente...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a neural network-based proton therapy monitoring method, device and system to solve the problem of the low accuracy of proton range and dose distribution measurement in the prior art, so that the accuracy of proton therapy lower degree problem

Images