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

A technology for radiotherapy and method determination, applied in radiotherapy, treatment, etc., can solve problems such as inability to guarantee the treatment effect and patients, and achieve the effects of reducing hardware investment, reducing repeated positioning errors, and high precision

CN104548372AActive Publication Date: 2015-04-29SHANGHAI UNITED IMAGING HEALTHCARE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-04-29

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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.
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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...

Examples

Embodiment Construction

[0075] In the prior art, it is difficult to quickly and accurately determine the dose distribution in the process of performing radiotherapy to a patient, which may cause a large error in the dose received by the patient.

[0076] In order to solve the above problems, the technical solution of the present invention provides a radiotherapy planning method.

[0077] Figure 1a It is a schematic flow chart of the radiotherapy planning method provided by the technical solution of the present invention. Such as Figure 1a As shown, step S1 is first performed to acquire the image data of the radiotherapy object online, based on the image data, the density distribution image of the object is obtained, and the region of interest is determined, and the region of interest includes the target region and the organ-at-risk region .

[0078] The image data of the radiotherapy target may be any one of CT images, nuclear magnetic resonance images, infrared images or visible light images. Am...