1. Division of Vascular and Interventional Radiology Minimally Invasive Therapeutics Laboratory Mayo Clinic 13400 East Shea Blvd. Scottsdale AZ 85259 USA
2. Departments of Radiology and Neurological Surgery Mayo Clinic 13400 East Shea Blvd. Scottsdale AZ 85259 USA
3. Department of Interventional Radiology Memorial Sloan Kettering Cancer Center Weill Cornell Medical Center 1275 York Avenue New York NY 10065 USA
4. Department of Interventional Radiology The University of Texas MD Anderson Cancer Center Houston TX 77054 USA
5. Department of Bioengineering Department of Radiological Sciences Department of Chemical and Biomolecular Engineering Center for Minimally Invasive Therapeutics California Nanosystems Institute University of California 410 Westwood Plaza Los Angeles CA 90095 USA