Current Lab Members

Duan Xu, PhD
Assistant Professor in Residence
[email protected]

Dr. Duan Xu is an Assistant Professor in Residence at UCSF's Department of Radiology and Biomedical Imaging.

Olga Tymofiyeva, PhD
Assistant Professional Researcher
[email protected]

Dr. Olga Tymofiyeva has worked in UCSF Radiology & Biomedical Department since May 2010. She holds her degrees in Physics (PhD, University of Wuerzburg, Germany) and Electrical Engineering (MSc, Karlsruhe University of Applied Sciences, Germany and BSc, NTUU "KPI", Kyiv, Ukraine). Dr. Tymofiyeva's current research interest lies in using MRI to study normal and abnormal brain development, as well as the effects of interventions:

Shujuan Fan, MBBS, MEd, PhD
Postdoctoral Scholar
[email protected]

Dr. Shujuan Fan joined our Imaging Research for Neurodevelopment lab in Aug, 2017. She was trained in clinical medicine (MBBS, 2005) and applied psychology (Med, 2008) at Shandong University (Jinan, China), and received her PhD in Biomedical Imaging at Dept. of Electrical and Electronic Engineering, The University of Hong Kong (Hong Kong, 2013). Dr. Fan’s current major research interest is using hyper polarized 13C MR to study brain metabolism during normal development and neonatal injuries such as ischemic stroke.

Yiran Chen, BSc
Graduate Student
[email protected]

Yiran Chen graduated with a BS degree in Physics from Welseyan College. Her current research includes post-processing of newborn images acquired by magnetic resonance imaging to investigate brain microstructures and functions during maturation. She is also involved in technical development to improve images qualities.

Justin P. Yuan, BSc
Assistant Specialist
[email protected]

Justin P. Yuan is an Assistant Specialist at UCSF Radiology & Biomedical Imaging. He obtained his BS in Physiology & Neuroscience from UC San Diego. His research interests are in the usage of MRI to characterize adolescent brain changes and the reliability of such measures.


Trevor Flynn, BA
Staff Research Associate
[email protected]

Trevor Flynn joined the Xu Lab in June 2013 after receiving his B.A. in Neuroscience from Pomona College in 2013. Trevor's interests include brain mapping and improving how MRI data is collected and processed for special experimental paradigms. In the Xu Lab Trevor collects and processes MRI data from infants in the Bamri, Premri, and Cardiac studies and investigates the variability of functional connectivity in these populations.



Artan Kaso, PhD
Postdoctoral Scholar
[email protected]



Liz Phillips, BSc
Former Junior Specialist
[email protected]

Liz Phillips graduated with a BA in Biology (Minor: Chemistry) from the University of Utah, where she was involved in pre-clinical research of stem cell treatments for kidney disease and diabetes for seven years, and clinical research using PET/CT to detect brown adipose tissue for two years. She joined the Xu Lab in January 2015, where her research includes the post-processing of spectroscopic data acquired in preterm newborns to study metabolic changes over the course of development. Her research interests included pediatric imaging, cancer imaging, and improving the data quality of MRI scans. Liz is currently pursuing an MD degree.

Hosung Kim, PhD
Former Postdoctoral Scholar
[email protected]

Dr. Hosung Kim developed various analytic frameworks (e.g., cortical morphometry, VBM, DBM and structural network analysis) for the assessment of brain structures in healthy controls and pathological conditions that often present anatomical variations implying the hypothesized pathophysiology.  He joined the Xu Lab in April 2014, where he expands his skill-set to the analysis of fetal/neonatal brain MRIs. He is an awardee of the 2014-2015 Banting Fellowships of Canada. Dr. Hosung Kim is currently an Assistant Professor of Neurology at the USC Keck School of Medicine.

Jiaolong Cui, PhD
Former Postdoctoral Scholar
[email protected]

Dr. Cui received his Ph.D degree in Biomedical Engineering from the University of Hong Kong in 2013. He worked as postdoctoral fellow in McLean hospital, Harvard Medical School from 2013-2014. He came to UCSF as a postdoctroal researcher in Dr. Xu's group in September 2014. His research interests were focused on using advanced MRI techniques, e.g. diffusion tensor imaging and functional MRI, to investigate the brain structural and functional maturation in newborns. Jialong is currently a member of the technical staff at Oracle.

Xin Liu, PhD
Former Postdoctoral Scholar

Xin Liu was a postdoctoral researcher in Dr. Xu's group from 2011-2014. He received his Ph.D. in Medical Physics in 2011 from the Center for Advanced Imaging Research (UCAIR) at the University of Utah, Salt Lake City, Utah. His research focused on MRI applications to detect the perfusion and oxygenation of the neonatal brain.

Patricia Lee, BSc
Former Staff Research Associate

Patricia Lee was a Staff Research Associate from 2011-2013. Her research interests were in longitudinally characterizing metabolite concentrations of hypoxic-ischemic brain injury in vivo using NMR Spectroscopy. She is currently pursuing an MD degree.


Yu Zhang, MD
Former Visiting Postdoctoral Scholar

Yu Zhang is a PhD Candidate of Orthopaedic Surgery in Jilin University of China who was a Visiting Postdoctoral Scholar in UCSF Radiology & Biomedical Department since from Dec 2011-2013. His research interests were in fMRI.


Nan Tian, MSc
Former Junior Engineer

Nan Tian received his BS and MS from Case Western Reserve University in Biomedical Engineering. His research interests were in developing a coil and MRI compatible incubator for CHDMRI, PREMRI, and BAMRI neonates. He was in Dr.Xu's lab October 2009-2012.


Jae-Seung Kim, PhD
Former Visiting Research Scientist

Dr. Kim is currently acting as a Principal Engineer in the Multimedia R&D Team of Samsung Electronics. He was a Visiting Research Scientist in Dr. Xu's lab from July 2011-2012.


Charles Vaughan, BSc, MPH
Former Staff Research Associate

Charlie is currently pursuing a career in Public Health and Medicine. He was a Staff Research Associate in the Xu lab from 2009-2010.