1 Department of Thoracic Surgery, The First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi, China.
2 Department of Pathology, The First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi, China.
3 Department of Ultrasound, The First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi, China.
4 Department of Nuclear Medicine, The First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi, China.
5 Department of Nuclear Medicine, The First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi, China. Electronic address: jacky_mg@xjtufh.edu.cn.