Dr. Hettie is an NCI/NIH Ruth L. Kirschstein NRSA Fellow (PI/PD) in the Departments of Radiology and Otolaryngology - Head & Neck Surgery within the School of Medicine at Stanford University that specializes in the design, development, and implementation of near-infrared-I/II peptidyl-, nucleic acid-, and immuno-based activatable bio-/molecular probes, biosensors, theranostics, and nanoparticles targeting biomarkers of brain cancers and their tumor microenvironment for their early detection, direct visualization, and surgical removal via utilizing image-guided surgery. He focuses on their rational design, bio-/chemical synthesis, and bio-/analytical evaluation in both a basic science research and preclinical setting. He has a Ph.D. in synthetic bio-/organic chemistry and previously was a postdoctoral scholar in the Department of Chemistry at Stanford University pursuing the development of nucleic acid-templated near-infrared-I (NIR-I) fluorescent probes.