Proton therapy monitoring method, device and system

Abstract

The invention relates to a proton therapy monitoring method, device and system. The method comprises determining a tumor lesion region according to a pre-constructed three-dimensional phantom; determining a region of interest according to the tumor lesion region; receiving a sound wave time sequence signal collected by an acoustic detector when the proton beam irradiates the tumor lesion region; processing the sound wave time sequence signal to obtain the proton beam dose distribution in the region of interest; selecting the position of the maximum dose from the proton beam dose distribution as the Bragg peak position; detecting the proton beam dose distribution and whether the Bragg peak position falls within the tumor lesion region; if so, adjusting beaming parameters of the proton beam.By means of the technical scheme, the Bragg peak position can be accurately determined, the proton beam dose distribution and the Bragg peak position are monitored, the beam parameters of the protonbeam are adjusted to ensure that the dose of the proton beam irradiation is normal and the position is accurate, the risk of the tumor recurrence and the normal organ concurrency is reduced, and the treatment effect of the proton therapy on a patient is ensured.

Description

technical field [0001] The invention relates to the technical fields of proton therapy and acoustic wave imaging, in particular to a monitoring method, device and system for proton therapy. Background technique [0002] The current means of treating malignant tumors (cancer) mainly include surgery, chemotherapy and radiotherapy, and more than 70% of tumor patients need to receive radiotherapy alone or comprehensive treatment combined with radiotherapy. The ideal radiation therapy is to give the maximum lethal dose to cancer cells while minimizing the radiation dose to surrounding normal organs and tissues. Proton therapy is such a cutting-edge radiation therapy technology for precise cancer treatment. The radiation dose curve of proton beams in the human body rises slowly at first, and then gradually becomes faster until the maximum dose deposition occurs at the Bragg peak, and then the curve drops rapidly and tends to zero. The Bragg peak characteristic of the proton beam ...

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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a proton therapy monitoring method, device and system to solve the problem of uncertainty in the dose and range of protons in the patient's body in the prior art, and the inability to accurately locate the position of the Bragg peak, resulting in tumor Insufficient dose of tissue or over-irradiation of normal organs greatly increases the risk of tumor recurrence and complications of normal organs, thus making the treatment effect poor

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