1 Department of Interventional Radiology, No. 2 People's Hospital of Changzhou, Nanjing Medical University, Xing long road 29#, Changzhou, 213003, Jiangsu province, China.
2 Department of Radiology, Mayo Clinic, Jacksonville, 32224, Florida, USA.
3 Department of Radiology, Mayo Clinic, Jacksonville, 32224, Florida, USA. wang.weiping@mayo.edu.