1. Sino-Dutch Biomedical and Information Engineering School, Northeastern University, Shen Yang, Liao Ning, China
2. Department of Computer Science, The University of Hong Kong, Hong Kong, China
3. Department of Radiology, The Second Hospital of Jilin University, Chang Chun, Ji Lin, China
4. Department of Radiology, ShengJing Hospital of China Medical University, Shen Yang, Liao Ning, China
5. Department of Electrical and Computer Engineering, University of Texas at El Paso, TX, USA