Four dimensional tracking radiotherapy system
A four-dimensional tracking radiotherapy technology, applied in radiotherapy, treatment, etc., can solve the problems of poor tolerance, poor precision, poor precision of passive pressurization technology, etc., and achieve clear moving process and good compliance
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Embodiment 1
[0025]Embodiment 1: The four-dimensional tracking radiotherapy system of the present invention comprises a tumor trajectory extraction system 1, is provided with a trajectory tracking accelerator 2, and the trajectory tracking accelerator 2 is provided with a treatment head, and the treatment head is provided with a secondary collimator 5, two The two-dimensional moving mechanism 4 and the multi-leaf collimator 3, the two-dimensional moving mechanism 4 includes a driving motor 6, a linear guide rail 9, a ball screw 7 and a joint block 8, and the driving motor 6 is horizontally installed on the side of the secondary collimator 5, and the driving The motor 6 is equipped with a controller, the signal receiving end of the controller is connected to the tumor motion trajectory extraction system, the signal sending end is connected to the driving motor 6, the ball screw 7 is located on the side of the driving motor 6, and the linear guide 9 is horizontally installed on the secondary c...
Embodiment 2
[0026] Embodiment 2: On the basis of the structure of Embodiment 1, the multi-leaf collimator 3 is provided with a blade group A10 and a blade group B11, and the multi-leaf collimator 3 is provided with a blade driving mechanism 12, and the blade group A10 and the blade group B11 are respectively Connected to a blade driving mechanism 12 , the multi-leaf collimator 3 is provided with a control chip, the signal receiving end of the control chip is connected to the tumor motion trajectory extraction system, and the signal sending end is connected to the blade driving mechanism 12 .
Embodiment 3
[0027] Embodiment 3: On the basis of the structure of Embodiment 2, the linear guide rail 9 is horizontally installed on the opposite side of the linear guide rail 9 on the secondary collimator 5, and the two linear guide rails 9 are installed on the same horizontal line.
[0028] Operation steps and working principle:
[0029] 1. Use a certain phase of the respiratory cycle as the initial phase, and formulate a treatment plan based on the static target area of this phase, and determine the accelerator irradiation parameters and the corresponding MLC irradiation aperture;
[0030] 2. The tumor movement trajectory extraction system 1 monitors the patient's tumor movement in real time, and obtains the tumor movement trajectory and law;
[0031] 3. The accelerator 2 receives the tumor movement trajectory generated by the tumor movement trajectory extraction system 1 in real time, uses a position prediction algorithm to estimate the future position of the target area, and decomp...
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