1 Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, Zhejiang, China.
2 Department of Radiology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
3 Philips Healthcare, Shanghai, China.
4 Clinical Research Board, Philips Research China, Shanghai, China.
5 Department of Radiology, Johns Hopkins University, Baltimore, Maryland.