1. Department of Electronic Science Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance Xiamen University Xiamen Fujian 361005 China
2. Center for Brain Imaging Science and Technology College of Biomedical Engineering and Instrumental Science Zhejiang University Hangzhou Zhejiang 310058 China
3. MSC Clinical and Technical Solutions Philips Healthcare Shenzhen Guangdong 518005 China
4. Department of Imaging Sciences University of Rochester Rochester New York 14642 USA