1. Key Laboratory of Symbol Computation & Knowledge Engineering, Ministry of Education, College of Computer Science & Technology, Jilin University, Changchun, 130012, PR China
2. School of Artificial Intelligence, Jilin University, Changchun 130012, PR China
3. Department of Radiology, The First Hospital of Jilin University, Changchun 130012, PR China
4. State Key Lab of CAD & CG, Zhejiang University, Hangzhou 310058, PR China
5. School of Mathematical & Computer Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
6. Zhuhai Laboratory of Key Laboratory of Symbolic Computation & Knowledge Engineering of Ministry of Education, Department of Computer Science & Technology, Zhuhai College of Jilin University, Zhuhai 519041, China