1. Department of Radiology, University of Michigan, 1301 Catherine, Ann Arbor, Michigan 48109, United States
2. Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University Tuebingen, 72074 Tuebingen, Germany
3. Cluster of Excellence iFIT (EXC 2180) “Image Guided and Functionally Instructed Tumor Therapies”, Eberhard Karls University of Tuebingen, 72074 Tuebingen, Germany
4. Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706, United States