With the continuous development of health care,diversified radiodiagnosis and radiotherapy have been increasingly and universally used,and the medical exposure to examinees and patients has become the wider and ever-increasing part of the artificial sources of ionizing radiation.

Application of nano- and micro-magnetic composite particles in radiotherapy;

Radiotherapy and safety management of protection;

Analysis of whole brain radiotherapy plus stereotactic radiosurgery in treatment of brain metastases from lung cancer;