1. Department of Radiology, The First People’s Hospital of Shunde, Foshan, Guangdong, P.R. China
2. Medical Imaging Center, First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, P.R. China
3. Institute of Molecular and Functional Imaging, Jinan University, Guangzhou, Guangdong, P.R. China
4. Department of Radiology, Guangdong General Hospital/Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, P.R. China