Safe distance for radioactive particle puncture needle implantation

Radioactive particle implantation is a minimally invasive and relatively safe treatment for patients. After radioactive particles are implanted, patients carry radioactive particles. Many people worry that the particles will harm themselves or people around them, and whether they need to wear protective clothing and protective equipment. This is actually a misunderstanding. Radioactive particles used for medical purposes have a very short range, less than 3cm in diameter, so they have little impact on normal tissue and do not affect nearby people. The precautions are as follows:

1. Because it is radiation, it is recommended to increase the contact distance appropriately for pregnant women and children, about 1m can be enough;

2. The radiation will gradually decay after the particle implantation, and the radiation will basically disappear after the half-life reaches half a year, so no special care is needed. However, after implantation, regular reexamination is required to observe whether the particles at the implantation site stray.