Photon energy synthesis method and system of a medical linear accelerator
A linear accelerator and photon energy technology, applied in X-ray/γ-ray/particle irradiation therapy, radiotherapy, treatment, etc., can solve the problems of increasing the operating cost of medical linear accelerators
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[0049] Such as figure 1 As shown, the photon energy synthesis method of the medical linear accelerator according to some embodiments of the present invention comprises the following steps:
[0050] S100, acquiring the first energy photon beam dosimetry data corresponding to the low energy photon beam (percentage depth dose curve and off-axis dose distribution curve, etc.), and the second energy corresponding to the high energy photon beam whose energy is higher than the first energy photon beam photon beam dosimetry data and intermediate energy photon beam dosimetry data corresponding to intermediate energy photon beams corresponding to low energy photon beams and high energy photon beams;
[0051] S200, perform mathematical fitting on the dosimetry data of the first energy photon beam and the dosimetry data of the second energy photon beam according to the preset fitting coefficient, and obtain the synthetic energy photon beam dosimetry data corresponding to the synthetic ene...
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[0090] The photon beam of the medical linear accelerator can choose one to three levels from 4 to 18MV, such as 6MV, 10MV and 15MV. After the acceptance of the third-level energy adjustment, measure the dosimetry data of each level of energy under various geometric conditions, and synthesize a 10MV energy photon beam from 6MV and 15MV. The specific implementation process is as follows:
[0091] 1. Obtain the first energy photon beam dosimetry data, the second energy photon beam dosimetry data, and the intermediate energy photon beam dosimetry data corresponding to the first energy photon beam dosimetry data and the second energy photon beam dosimetry data; The low-energy photon beams corresponding to the first energy photon beam dosimetry data and the high-energy photon beams corresponding to the second energy photon beam dosimetry data are respectively 6MV and 15MV photon beams, and the intermediate energy photon beams corresponding to the intermediate dosimetry data are 10MV ...
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