Comparing the accuracy and speed of 3DV+TPS software with imported TPS and domestic TPS to outline the contours of crisis organs, it is proved that 3DV+TPS has superiority compared with domestic TPS, and it has non-inferiority compared with imported TPS, indicating that the software can improve contour sketching accuracy. And speed, reduce the burden on doctors, improve medical efficiency.

Comparing the accuracy and speed difference between 3DV+TPS software and imported TPS and domestic TPS to outline the contours of crisis organs, the selected organs are: bilateral eyeballs, bilateral crystals, bilateral optic nerves, bilateral parotid glands, oral cavity, spinal cord, brainstem, The brain has a total of 12 organs; verify that 3DV+TPS is superior to domestic TPS, and has non-inferiority compared with imported TPS, Ming software can improve the accuracy and speed of contour sketching, reduce the burden on doctors, and improve medical efficiency.

Inclusion Criteria:

1. It is diagnosed as nasopharyngeal carcinoma by histopathological examination, and there is no tumor invasion in the organs that need to be assessed;
2. Age 18-70 years old;
3. There is nasopharynx localization enhanced CT, nasopharynx enhanced MRI.

Exclusion Criteria:

1. Patient information is incomplete; no age, gender, MRI, height, radiotherapy location CT;
2. The organs at risk that need to be assessed are invaded by the tumor;
3. Any reason cannot be combined with the research or the researcher believes that it is not suitable for inclusion in this test.

A total of 7 different grade hospital radiotherapy centers have received radiotherapy for patients with nasopharyngeal carcinoma Case information, based on inclusion and exclusion criteria, a total of 300 cases were screened. Among them, Xinqiao Hospital collected 180 cases, He collected 20 cases in 20 hospitals, totaling 200 cases.