Youngjun is a Ph.D. candidate in the Weldon School of Biomedical Engineering at Purdue University and a research assistant in the QBIS Lab. He is scheduled to defend his dissertation in October 2026 and will complete his degree in December 2026. He earned his B.S. in Radiology from Shingu University and his M.S. in Biomedical Engineering from Korea University. Before starting his Ph.D., he worked as a clinical radiographer at Samsung Medical Center and Seoul Medical Center, and as a staff researcher at Seoul National University Hospital, where he contributed to cardiovascular imaging device development. His doctoral research focuses on AI driven quantitative imaging biomarkers, applying radiomics and machine learning to CT, MRI, and ultrasound images to extract clinically meaningful information about tissue and bone health. His work has been recognized with the ASBMR Young Investigator Award (2024) and the Bottorff Graduate Fellowship (2025). Outside the lab, Youngjun enjoys yoga, working out, and meditation.