1. Department of Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
2. Department of Oncology, Johns Hopkins University, Baltimore, Maryland 21287, United States
3. The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, United States
4. The Russell H. Morgan Department of Radiology and Radiological Science, Division of Cancer Imaging Research, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States