1. Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging; School of Biomedical Engineering; Health Science Center; Shenzhen University; Shenzhen 518060 China
2. Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province; College of Optoelectronic Engineering; Shenzhen University; Shenzhen 518060 China
3. Laboratory of Molecular Imaging and Nanomedicine; National Institute of Biomedical Imaging and Bioengineering; National Institutes of Health; Bethesda MD 20892 USA
4. Section on Quantitative Imaging and Tissue Science; Division of Imaging,; Behavior and Genomic Integrity; Eunice Kennedy Shriver National Institute of Child Health and Human Development; National Institutes of Health; Bethesda MD 20892 USA