Radiotherapy in-vivo dose monitoring method

Abstract

The invention belongs to the technical field of dose monitoring, and particularly provides a radiotherapy in-vivo dose monitoring method, which comprises the following steps: S0, acquiring a CT image of a body part, needing to be irradiated, of a patient, making a radiotherapy plan according to the CT image, obtaining a positioning CT image of a target region, and storing the positioning CT image of the target region as a standard CT image; S1, acquiring an image of an in-vivo anatomical structure of a current treatment part of a patient through scanning equipment, and recording the image as a current image; S2, registering the current image with a standard positioning CT image; if the registration result is that the error is greater than the specified value, adjusting the posture of the patient, and returning to the S1; if the registration result accords with a specified value, entering S3; and S3, carrying out radiotherapy on the patient by using radiotherapy equipment, and monitoring the in-vivo dose of the patient. Compared with the prior art, the method has the advantages that additional injury to the patient can be avoided as much as possible, the treatment effect is better, and effectiveness and accuracy of in-vivo dose monitoring can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of dose monitoring, and in particular relates to a method for monitoring in vivo dose of radiotherapy. Background technique [0002] Radiotherapy is one of the important treatment methods for cancer at present. When precise radiotherapy techniques such as intensity-modulated radiotherapy and three-dimensional stereotactic radiotherapy are used to treat patients, in order to ensure the therapeutic effect, it is necessary to ensure that the radiotherapy target area receives the correct radiation dose. In the case of ensuring the accurate beam dose of the treatment machine, the deviation of the irradiation position is one of the important factors affecting the patient's exposure dose. [0003] The current common process is to obtain the patient's CT positioning image based on the results of CT simulation positioning, so as to understand the spatial image of the patient's internal anatomical position and the pos...

AI Technical Summary

Problems solved by technology

[0005] However, radiotherapy is a long-term phase, and it goes through a long period of time, and the changes of the human skin during this period are unpredictable

At the same time, because the positioning line is marked on the skin or thermoplastic film instead of the target area (the target area is in the body), the human body is composed of a large number of soft tissue structures such as non-rigid fat and muscle, and there may be a certain displacement between various organs, and there may be The positioning line has been aligned with the body surface, but the position of the target area is deviated. In this case, the patient’s in-body dose monitoring results are not reliable; Exposure to normal tissue outside the body may cause additional harm to the patient

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