1. Department of Radiology, Weill Cornell Medicine, Cornell University, New York, New York 10065, United States
2. Department of Engineering, University of Jamestown, Jamestown, North Dakota 58405, United States
3. Sandia National Laboratories, Albuquerque, New Mexico 87123, United States
4. Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
5. Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503, Japan
6. Department of Physics, United States Naval Academy, Annapolis, Maryland 21402, United States
7. Department of Mechanical and Nuclear Engineering, Kansas State University, Manhattan, Kansas 66506, United States