The BW-TLC120 thyroid lung counter is mainly composed of a thyroid detector, a lung detector, energy spectrum analysis software, and dose assessment software. It is equipped with a computer and is mainly used to measure the content of radioactive nuclides in the human thyroid and lungs, as well as to evaluate the internal radiation dose. It can measure the types and activities of nuclides in the thyroid and lungs of individuals and is used to evaluate the level of internal radiation exposure.Can be used for on-site measurement of radioactive nuclide activity in human organs in nuclear emergencies, nuclear power plants, reprocessing plants, special nuclear material processing sites, etc....