Radiotherapy plan simulation method and device

Abstract

The invention provides a radiotherapy planning simulation method and device. The radiotherapy planning simulation method includes: a. obtaining the first positions of multiple feature points in the actual space; b. collecting images of the multiple feature points, and acquiring the multiple feature points in the image based on the images c. calculate the projective transformation relationship according to the first position and the second position of the plurality of feature points; and d. convert the three-dimensional model of the treatment head and the three-dimensional treatment bed according to the projective transformation relationship one or both of the model and the patient three-dimensional model are mapped to a display interface to simulate movement of one or both of the treatment head, the treatment couch and the patient in the display interface, and Motion of the patient is also simulated when motion of the treatment couch is simulated on the display interface, wherein motion of the treatment head, the treatment couch, and the patient is at least partially dictated by the radiation therapy plan.

Description

technical field [0001] The invention mainly relates to a radiotherapy plan, in particular to a radiotherapy plan simulation method and device. Background technique [0002] Radiation therapy (abbreviated as radiotherapy) is a commonly used method for the treatment of malignant tumors. . The rays can be alpha rays, beta rays, gamma rays, X rays, electron beams, proton beams and the like. [0003] In the actual radiotherapy process, high-energy rays need to be injected into the body of the patient from different angles in turn, so that the rays are 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 couch have their own rotation axes, and the two parts cooperate to flexibly control the incident angle of rays in space. However, because the two parts can move freely, sometimes the treatment head collides with the patient...

AI Technical Summary

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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