1. Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
2. Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, United States
3. Werner Siemens Imaging Center, Eberhard Karls University Tübingen, Tübingen 72076, Germany
4. Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”, University of Tübingen, Tübingen 72076, Germany
5. Department of Chemistry, University of Texas at Dallas, Richardson, Texas 75080, United States