1. Department of Medical Imaging, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
2. Institute of Electronic Information Engineering, Changchun University of Science and Technology, Changchun, China
3. Laboratory of Image Science and Technology, Key Laboratory of Computer Network and Information Integration, Jiangsu Provincial Joint International Research Laboratory of Medical Information Processing, School of Computer Science and Engineering, Ministry of Education, Southeast University, Nanjing, China
4. Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW, Australia
5. Minfound Medical Systems Company Ltd., Yuecheng, Zhejiang, Shaoxing, China
6. Department of Radiology, School of Medicine, Johns Hopkins University, Baltimore, MD, USA