Implantation of particles

Particle implantation, or "radioactive particle implantation therapy," is a treatment that implants radioactive sources into tumors to destroy them. Particle implantation therapy involves radioactive sources, the core of which is radioactive particles. A substance called iodine-125 is now in clinical use. Each iodine-125 particle acts like a small sun, with the strongest rays near its center, minimizing damage to normal tissue. Particle implantation therapy dates back to the early 1900s. At present, radioactive particle implantation in the treatment of early prostate cancer has become a standard treatment in the United States and other countries, and its treatment concept is gradually recognized in China.

Radioactive particle implantation therapy technology mainly relies on stereotactic system to accurately implant radioactive particles into the tumor, and emits sustained and short-distance radiation through micro radioactive sources, so that the tumor tissue suffers maximum damage, while the normal tissue is not damaged or only slightly damaged. Experts believe that compared with other tumor treatment technology, radioactive particle implantation therapy technology itself is not high technology content and difficult. However, since it is implanted directly into the body and is a radioactive source, the indications should be strictly controlled.