Institution: | 1. Department of Engineering Physics, Tsinghua University, Beijing 100084, People''s Republic of China;2. Siemens Mindit Magnetic Resonance Ltd. (SMMR), Shen Zhen, Guang Dong 518057, People''s Republic of China;3. Radiology, Xuanwu Hospital, Capital Medical University, Beijing 100053, People''s Republic of China |