1. Electronic Instrumentation Laboratory, Delft University of Technology, Delft, The Netherlands
2. Laboratory of Acoustical Wavefield Imaging, Delft University of Technology, Delft, The Netherlands
3. Department of Imaging Physics, Laboratory of Acoustical Wavefield Imaging, Delft University of Technology, Delft, The Netherlands
4. Department of Biomedical Engineering, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands