1. Thoraxcenter–Biomedical Engineering, Erasmus Medical Center, 3000 CA Rotterdam, Netherlands.
2. Faculty of Applied Sciences–Imaging Physics, Delft University of Technology, 2600 AA Delft, Netherlands.
3. Faculty of Electrical Engineering, Mathematics and Computer Science–Micro Electronics, Delft University of Technology, 2628 CD Delft, Netherlands.
4. Department of Experimental Medical Instruments, Erasmus Medical Center, 3015 CN Rotterdam, Netherlands.