1. Department of Radiation Oncology Affiliated Hospital (Clinical College) of Xiangnan University Chenzhou 423000 P. R. China
2. Key Laboratory of Medical Imaging and Artifical Intelligence of Hunan Province Chenzhou 423000 P. R. China
3. Department of Physical examination Beihu Centers for Disease Control and Prevention Chenzhou 423000 P. R. China
4. Department of Interventional vascular surgery Affiliated Hospital (Clinical College) of Xiangnan University Chenzhou 423000 P. R. China