1. Department of Materials Science and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
2. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
3. Departments of Radiology and Medical Physics, University of Wisconsin—Madison, Madison, Wisconsin 53705, United States
4. Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430073, China
5. Department of Surgery, University of Wisconsin—Madison, Madison, Wisconsin 53792, United States