Radiotherapy planning method and device, radiotherapy dose determining method and device and radiotherapy quality guaranteeing method and device

Abstract

The invention discloses a radiotherapy planning method and device, a radiotherapy dose determining method and device and a radiotherapy quality guaranteeing method and device. The radiotherapy dose determining method includes the steps of online obtaining image data of a radiotherapy object, obtaining a density distribution image of the object based on the image data, determining a region of interest, and online making a radiotherapy plan of the object according to the density distribution image and the region of interest; executing the radiotherapy plan; rebuilding radiation field intensity distribution data based on information recorded by machines; carrying out calculation based on the radiation field intensity distribution data to obtain practical radiotherapy dose distribution. As the online-obtained image data are adopted, the accuracy of the image data is improved; as the radiation field intensity distribution data are rebuilt based on the information recorded by the machines, the dose distribution accuracy is higher. In the radiotherapy quality guaranteeing method, when deviation exists between the practical dose distribution result and a main plan dose, a sub-plan is modified, it is guaranteed that the use total dost is coincident with the plan dose, and the radiotherapy quality is improved.

Description

technical field [0001] The invention relates to the technical field of radiotherapy dose, in particular to a radiotherapy plan and a method and device for quality assurance of radiotherapy. Background technique [0002] The process of radiotherapy for patients is usually as follows. First, the patient scans and collects image data on a simulator. The simulator refers to the scanning system used for virtual simulation positioning and planning design before radiotherapy, including CT simulation. machine, MR simulator, etc. Afterwards, in the radiotherapy planning system (TPS, treatment planning system), the doctor outlines the target area and organs at risk on the images of the image data to generate the patient's radiotherapy plan. The radiotherapy plan includes the radiation field angle, radiation Field area, dose intensity distribution, etc. Then, in the radiotherapy equipment (such as electron linear accelerator) in the radiotherapy room, the patient is given radiotherap...

AI Technical Summary

Problems solved by technology

However, this method cannot guarantee that the dose received by the patient every day is consistent with the plan, and because the patient’s tumor shape and position change every day, the method of correcting the dose error the next day cannot guarantee the therapeutic effect of the original plan.

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