The "nuclear" thing has long been widely used in Medical aspects that are closely related to our health Just like PET-CT, which is called the "magic tool for cancer detection" The purpose of using nuclear technology to screen for diseases This is actually a misunderstanding of nuclear medicine. Nuclear Medicine It is a discipline that uses radionuclides Disciplines with medical applications Simply put, before CT The patient is injected with a special imaging agent It just so happens that cancer cells like to eat this stuff And let it accumulate in large quantities in your body When irradiated with a specific instrument Cancer cells glow when they eat something Thus exposing the location and size of cancer cells The dose of radionuclide injected is very small It is not enough to cause harm to the human body Moreover, under normal circumstances We are exposed to radiation every day. The food we eat, the houses we live in, the mountains, rivers, lakes and seas all have certain radiation. But short-term, low-dose radiation is not enough to affect health We are rarely exposed to high doses of radiation that can harm human health in our daily lives. There is no need to worry that the radiation will stay in the body. When radionuclides enter the body, It's already starting to fade. The physical half-life makes them Will decay on its own Generally after 5 to 6 half-lives That is to say, half a day or at most one day after the injection It almost disappeared. |
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