Radiotherapy plan simulation method and device

Abstract

The invention provides radiotherapy plan simulation method and device. The radiotherapy plan simulation method comprises the following steps: (a) acquiring the first positions of multiple feature points in an actual space; (b) acquiring the images of the feature points, and acquiring the second positions of the feature points in the images based on the images; (c) calculating a projection transformation relation according to the first positions and the second positions of the feature points; and (d) mapping one or two of a treatment head three-dimensional model, a treatment table three-dimensional model and a patient three-dimensional model to a display interface according to the projection transformation relation, so as to simulate the movement of one or two of the treatment head, the treatment table and the patient on the display interface; and simulating the movement of the patient when simulating the movement of the treatment table on the display interface, wherein the movement ofthe treatment head, the treatment table and the patient is at least partially stipulated by the radiotherapy plan.

Description

technical field [0001] The present invention mainly relates to radiotherapy planning, in particular to a radiotherapy planning simulation method and device. Background technique [0002] Radiation therapy (referred to as radiotherapy) is a commonly used method to treat malignant tumors. Its basic principle is to use the energy generated by a large number of rays to destroy the chromosomes of cells, stop the growth of cells, and eliminate malignant tumor cells that can divide and grow rapidly. . The rays may be alpha rays, beta rays, gamma rays, X-rays, electron beams, proton beams and the like. [0003] In the actual radiotherapy process, it is necessary to sequentially inject high-energy rays into the patient's body from different angles, so that the rays can be focused on the lesion to kill the tumor tissue. The mechanical structure of radiotherapy equipment is usually composed of two parts: a treatment head and a treatment couch. The treatment head and the treatment cou...

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Problems solved by technology

[0005] However, there are still certain dangers in the dry run inspection process, because if a collision is found, the technician performing the dry run needs to respond quickly and stop the movement of the radiotherapy equipment immediately, which will bring a certain psychological burden to the patient; If the patient is not placed, the technician needs to imagine the volume of the patient and the specific position on the hospital bed during the whole process of Dry Run. Although this method eliminates any impact on the patient, the accuracy is poor

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