Three-dimensional precise intracavitary radiotherapy method and system for treating tumours

A three-dimensional precise intracavitary radiotherapy method for treating tumours, comprising the following steps:

• step (1):
• performing three-dimensional quantitative lesion measurement on multiple three-dimensionally scanned images of a diseased lumen;
• step (2):
• performing comprehensive analysis according to a three-dimensional quantitative lesion measurement result and pathological characteristics, to calculate a three-dimensional radiation dose distribution map of the diseased lumen;
• and
• step (3):
• according to the three-dimensional radiation dose distribution map of the diseased lumen, selecting appropriate radiation sources and radiation doses to fabricate a stent, fabricating the stent and performing three-dimensional precise intraluminal irradiation by using the stent;
• the stent fabricated in step (3) comprising an external stent and an internal stent, the external stent and the internal stent being separate, and a main body of the internal stent expanding in the external stent only when the external stent and the internal stent are used;
• and a main body of the external stent being skeletal a mesh structure, and multiple radioactive particle filling capsules used to place radioactive particles being mounted on a surface of the mesh structure.