The Department of Interventional Oncology of Affiliated Hospital of Weifang Medical College started to carry out 125I radioactive particle implantation for the treatment of tumors in 2003, and has treated more than 500 cases of patients so far, all of which have received very good therapeutic effects. Using 125I radioactive particle implantation to treat cholangiocarcinoma, head and neck cancer, lung cancer, liver cancer, pancreatic cancer and soft tissue malignant tumors has received obvious therapeutic effects, and the tumor volume has been significantly reduced after treatment, and the quality of life has been greatly improved. What is iodine radioactive particle? Iodine radioactive particle (125I particle) is an extremely advanced miniature sealed radioactive source. It has a titanium alloy shell on the outside and consists of a silver rod adsorbed with the isotope 125I on the inside, cylindrical 4.5 mm long and 0.8 mm in diameter. The particles continuously emit radiation inside the tumor to radiate the tumor with a half-life of 60.2 days and a total duration of action of 1 year. Under the supervision of ultrasound, CT, etc., 125I radioactive particle implantation is applied by puncture technology to carry out long-lasting radiotherapy to the tumor. The treatment process is painless, with small trauma, accurate target center and low-dose continuous irradiation, which is the best conformal radiotherapy at present, and the local control rate of the tumor can reach more than 90%, and a lot of malignant solid tumors can be achieved to be cured radically. Which tumors can be treated by iodine radioactive particle implantation? After years of clinical application, it is found that except leukemia, all solid tumors can be treated with 125I particles, and it has obvious curative effect on prostate cancer, head and neck cancer, lung cancer, liver cancer, cholangiocarcinoma, pancreatic cancer and soft tissue malignant tumors, and the quality of life of the patients is greatly improved after treatment, and 125I implantation has been taken as the first choice of cancer treatment in many cancer fields in foreign countries. Currently, 125I implantation has been taken as the treatment of choice in many cancer fields abroad. 125I radioactive particle implantation for liver cancer 125I radioactive particle implantation for prostate cancer 125I radioactive particle implantation for nasopharyngeal cancer 125I radioactive particle implantation for lung cancer Is there any damage to human body by iodine radioactive particle implantation? What should I pay attention to after implantation? 125I radioactive particles are a kind of miniature radioactive source, although it emits radiation continuously in the body after implantation, the irradiation distance is very short, with a diameter of only 17 millimeters, so the impact on normal tissues other than tumors is very small, and there is basically no damage to the whole human body.