1. Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, SK, Canada
2. Department of Radiology, Radiation Oncology, and Medical Physics, The Ottawa Hospital, Ottawa, ON, Canada
3. Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
4. Quantum Energy Applications, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima, Japan