1. Department of Ultrasound, The Second Hospital of Tianjin Medical University, Tianjin 300211, China
2. Department of Radiology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China
3. Department of Radiology, Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital, Tianjin 300052, China
4. Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China
5. Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
6. College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK