1. Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
2. Department of Ultrasound, Chongqing People’s Hospital, Chongqing 400010, P. R. China
3. Department of Radiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
4. Department of Ultrasound Chongqing Key Laboratory of Ultrasound Molecular Imaging, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
5. Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
6. Department of Anesthesiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China