1. Department of Radiology; Shanghai General Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai 200080 China
2. Department of Biochemistry and Molecular Medicine; UC Davis Comprehensive Cancer Center; University of California Davis; Sacramento CA 95817 USA
3. Department of Radiology; the First Affiliated Hospital of Soochow University; Suzhou Jiangsu 215006 China
4. Division of Hematology/Oncology; Department of Internal Medicine; University of California Davis; Sacramento CA 95817 USA