1. Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
2. Department of Radiology and Diagnostic Imaging, University of Alberta, Edmonton, Alberta T6G 2R7, Canada
3. Department of Biomedical Engineering, University of Alberta, Edmonton, Alberta T6G 2V2, Canada
4. Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
5. School of Dentistry, University of Alberta, Edmonton, Alberta T6G 1C9, Canada