A real-time verification device and method for patient positioning in radiotherapy

Abstract

The invention relates to the technical field of patient location verification in a radiation therapy process, and particularly relates to a real-time verification device and method for patient placement in radiation therapy. The device comprises a first optical camera, a second optical camera and a third optical camera, wherein the first optical camera, the second optical camera and the third optical camera are arranged around a therapy bed. Each optical camera is arranged on a corresponding support. The first optical camera is arranged in front of the therapy bed. The second optical camera and the third optical camera are arranged on both sides of the therapy bed. Three optical cameras are connected with a video acquisition card through a video cable. The video acquisition card is arranged on a graphics workstation. A video calibration board is arranged on the therapy bed and corresponds to the head, the feet, the left side and the right side of a patient. The video calibration board acquires calibration images to calibrate the cameras. The graphics workstation uses an algorithm and software to control the cameras to realize the real-time verification of the patient placement. The device and method can realize accurate placement guide and verification of the patient, which greatly improves the accuracy of radiotherapy.

Description

Technical field [0001] The invention relates to the technical field of patient position verification during radiotherapy, in particular to a real-time verification device and method for patient positioning in radiotherapy. Background technique [0002] Radiotherapy (radiotherapy for short) is one of the three major technical methods for cancer treatment, and precision radiotherapy is the frontier and hot spot in the field of radiotherapy. Precise positioning of patients is the prerequisite and basis of accurate radiotherapy. In the implementation of radiotherapy plans, patients must be accurately positioned to obtain the desired good therapeutic effect. In clinical treatment, the center position of the lesion target area will change due to the inaccurate positioning of the patient and the patient's unconscious movement during the treatment, so that the radiation cannot be accurately irradiated on the patient's lesion target area, which brings more treatment to the treatment. Lar...

AI Technical Summary

Problems solved by technology

The disadvantage is that the imaging is not clear enough, or it will bring extra radiation dose to the normal tissue of the patient, which may cause complications in the patient

Colleagues need a long time for registration and fusion to verify the patient's positioning after obtaining the images, and real-time positioning verification cannot be achieved

[0004] Therefore, the problem existing in the existing technology is that the patient will receive an additional radiation dose during the imaging process, which increases the risk of disease in the normal tissue of the patient; at the same time, the algorithm operation steps for positioning verification using the obtained images are relatively complicated and difficult. To achieve real-time setup verification, which may affect the therapeutic effect of patients

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