What Is Radioactive Particle Implantation Therapy

The full name of radioactive particle implantation is "radioactive particle intertissue implantation", which is a new technique of short range radiation and accurate treatment of tumors. Its principle is to implant the micro radioactive source into the tumor under the guidance of imaging (CT or ultrasound), so that the tumor can get a highly conformal and highly intensity-modulating treatment. It delivers a high dose of radiation locally to the tumor, but the surrounding organs are not harmed. According to the treatment plan made in advance, under the guidance of CT or B-ultrasound, the physician accurately implants radioactive particles with a length of 4.5 mm and a diameter of 0.8 mm into the target area of the tumor. The radioactive particles continuously emit radiation in the body, which can significantly increase the dose received by the tumor and achieve conformal treatment in the high-dose target area. It can irradiate the tumor cells of different maturity continuously, increase the radiation biological effect and improve the therapeutic effect of radiotherapy.

Although the radiation energy generated by the implantation of radioactive particles between tumor tissues is not large, it can continue to act on tumor cells and kill tumor stem cells continuously. After sufficient dose and half-life, all tumor cells can lose the ability to proliferate and achieve the therapeutic effect of complete eradication. Since the radiation emitted by the radioactive particle source has a short penetration distance, with an effective range of 1.7cm, it does not damage the surrounding normal tissue. And it doesn't cause systemic symptoms. While killing tumor cells to the maximum extent, reducing the damage to the surrounding normal tissue.