What's the deal with the particle knife

Radiation therapy for malignant tumors as we know it (radiation therapy) is usually performed by irradiation of external radiation equipment into the tumor site. The radiation has to pass through the skin and some normal tissues and organs to reach the tumor, which will suffer unnecessary damage. With the continuous progress of medical technology, in recent years, a new tumor radiation therapy technology -- high precision tumor intertissue radioactive particle implantation therapy (referred to as "particle knife") was born. The particle knife implants tiny radioactive sources into tumor tissue precisely according to the shape of the tumor. Through its continuous low-energy Y rays, the tumor tissue subjected to devastating destruction. The advantages of this method are: local brachytherapy to the tumor, the dose of radiation therapy is low, the duration of treatment is long, the damage to the surrounding normal tissue is small, and the lethality of tumor cells is strong. And can avoid surgical trauma, no serious toxic side effects, reliable curative effect, for the recent clinical treatment of cancer one of the advanced means, and become a historical revolution in the effective treatment of cancer, for cancer patients to improve the quality of life, reduce pain and prolong the life of the Gospel. At present, the radioactive particles commonly used in medical treatment are radioactive iodine particles with a diameter of 0.8mm and a length of 4.5mm sealed by the titanium alloy shell. Therefore, radioactive iodine will not be absorbed into the blood by the human body and cause environmental radiation pollution, and it is safe for patients, family members and medical staff. The method of particle knife surgery is to determine the location and size of the tumor through CT or MRI, and calculate the number of radioactive particles used. Under the guidance of B ultrasound or CT, the particles were inserted into the tumor by percutaneous puncture with the implantation needle. The radioactive particles were placed in the fully enclosed radiation-proof implant, and the particles were delivered to the tumor by the implantation needle. Intratumor implantation can also be performed through various endoscopes, or puncture implantation can be performed under direct vision for partially resected or unresectable tumors during surgery, or preventive implantation can be performed more conveniently in areas where the tumor is likely to spread.