Radiotherapy dose verification method, processor and system

Abstract

The invention discloses a radiotherapy dose verification method, processor and system. The method comprises the following steps: 1, obtaining an equivalent human body model based on pixel points; 2, selecting the tumor center region of the equivalent human body model as the target point so as to determine the target region and select at least one verification point; 3, collecting the actual dose of the corresponding verification point in case of radiotherapy plan irradiation by a dosimeter; 4, judging whether the dose of the current radiotherapy plan and the verification point in actual implementation is consistent or whether the difference value is within the preset threshold range; the process is ended if the judgment result is yes; or the process goes to the next step; 5, inversely simulating the error spatial distribution of the radiotherapy plan according to the spatial position of all verification points and the actual dose in case of implementation of radiotherapy plan radiation; and 6: correcting the corresponding radiotherapy plan according to the error spatial distribution of the radiotherapy plan so as to obtain the corrected target area and dose and return to the step 3.

Description

technical field [0001] The invention belongs to the field of radiotherapy dose verification, and in particular relates to a radiotherapy dose verification method, processor and system. Background technique [0002] During medical radiation therapy, doctors and physicists formulate radiation therapy plans, such as target area delineation, based on actual medical tomographic images (CT, MRI) of patients. Through the implementation of the radiotherapy plan, the radiotherapy equipment can carry out radiotherapy for different angles, regions and depths according to the plan, and apply radiation with specific energy. [0003] The above-mentioned treatment process depends on the accurate delineation of the patient's image and the precise implementation of the radiotherapy plan. In this process, errors in image positioning, incorrect target delineation, and incorrect dose calculations during implementation will all lead to failure of radiotherapy. Not only diseased tissues will not...

AI Technical Summary

Problems solved by technology

However, individual patients have unique characteristics, and the location and type of lesions are different. The use of water tanks and standard dose phantoms can only calibrate the dose of the radiotherapy system, and cannot verify the dose plan of the individual patient, which affects the individual dose of the patient. precision and accuracy

[0005] In addition, the existing method of verifying the dose plan is only to verify the dose of a radiotherapy plan. In the process of revising the radiotherapy plan, it is only based on feeling and experience, and it takes a lot of time to revise the radiotherapy plan. Issues that ultimately lead to inefficient revision of radiation treatment plans

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