Method for printing nasopharyngeal carcinoma afterloading source applicator by employing 3D printer and application method thereof

The present invention discloses a method for printing a nasopharyngeal carcinoma afterloading source applicator by employing a 3D printer and an application method thereof. The method comprises the following steps of: performing nasopharynx location CT scanning once for a patient; transmitting a first DCM obtained through scanning to an afterloading planning system, and sketching a tumour area andorgans at risk according to the CT image; designing the size and the shape of the source applicator and position parameters of a supply radiator duct in the first DCM file by the afterloading planning system; transmitting the first DCM file to a 3D printer image system; converting parameters in the first DCM file to a .stl file identified by a 3D printer and perform optimization; and employing the 3D printer to perform printing molding of the source applicator. The 3D printer is employed to print the source applicator with designed source applicator parameters, patients carrying with the source applicator and false s