1 Department of Magnetic Resonance Imaging, Fuwai Hospital and National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beilishi Road No.167, Xicheng District, Beijing 100037, China.
2 Department of Radiology, Fujian Provincial Hospital, Dongjie Road NO.134, Gulou District, Fuzhou 350001, China.