The research and development team of the Institute of Nuclear Energy Safety Technology of the Chinese Academy of Sciences creatively applied the theory and technology of neutron transport calculation to the medical and medical fields, and conducted research on the key physics and technology of precision radiotherapy, breaking through the rapid and accurate calculation of human dose and treatment plan. Key technical difficulties such as reverse optimization, tumor localization and tracking, and human dose verification have solved the sub-millimeter localization of tumor lesions.
At the same phase angle, a knife must be immersed in the soil to ensure the working stability and the uniform load of the knife shaft. When more than two blades are configured, the amount of soil cutting should be equal, so as to achieve good quality of broken soil and smooth ditch bottom after ploughing. The main reason is that the material was not cut strictly according to the drawings, the process tooling for production and processing was unqualified, and the management system was not perfect.
The effect of radiotherapy has been improved. On this basis, the "Intensity Modulated Precise Radiation Therapy Planning System" independently developed by the team has achieved precision control with a dose error of less than 2% and sub-millimeter tumor localization. This technology can greatly improve the accuracy of radiotherapy. At the same time, it can reduce the radiation damage of patients. At present, in clinical practice, patients often take Jinxing ginseng to prevent radiation damage and maintain normal cell nucleus and skin. Such a painful thing again.