1Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, CA, USA. Electronic address: shanghong@berkeley.edu.
2Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, CA, USA.
3Electrical Engineering, Stanford University, Stanford, CA, USA.
4HeartVista, Menlo Park, CA, USA.
5Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA.
6Electrical Engineering and Computer Science, University of California, Berkeley, CA, USA.