Method for self-adaptive target area of ​​radiotherapy system and radiotherapy system thereof

Abstract

The invention discloses a radiotherapy system self-adaptive target area method and the radiotherapy system thereof. The radiotherapy system self-adaptive target area method includes obtaining the position change amount of the target area identification position; collecting the current time of the target area identification position the direction of movement; read the position change amount of the movement direction at the current time in the database; and control the radiation therapy device to move in the direction opposite to the movement direction at the current time. The radiotherapy system includes, for acquiring the position change amount of the target region identification position; a movement direction acquisition device for acquiring the movement direction of the target region identification position at the current time; for reading the position change of the movement direction at the current time in the database A processing device that issues an instruction to the radiation therapy device to move in a direction opposite to the current time motion direction; and a radiation therapy device that is used to move in a direction opposite to the current time motion direction according to the command issued by the processing device.

Description

technical field [0001] The invention relates to the technical field of radiotherapy, in particular to a method for self-adapting a target area of ​​a radiotherapy system and a radiotherapy system thereof. Background technique [0002] The traditional radiotherapy couch is to place the irradiation center of the patient's target area and the isocenter of the linear accelerator to overlap to perform treatment. If the patient's target volume is located in an organ such as the lung, its breathing movement will cause the target volume to deviate from the irradiation center, thereby affecting the accuracy of radiation therapy. [0003] In order to reduce the displacement error caused by breathing motion, the traditional method is to increase the delineation volume of the target area or use breathing regulation technology. Enlarging the delineated volume of the target volume will lead to an increase in the radiation dose to the normal tissues around the tumor target volume, resulti...

AI Technical Summary

Problems solved by technology

[0005] However, human organs and tumors change three-dimensionally with respiratory movement, while the radiation target area changes two-dimensionally. Therefore, the accuracy and speed of tracking tumor position using RPM breathing control technology cannot fully adapt to the change of tumor position, and it will still cause normal tissue damage

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