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About NCIRE - The Veterans Health Research Institute
NCIRE's Impact on Veterans Veteran's Health Research Researchers by Name
There's no question that the San Francisco VA Medical Center, with the support of NCIRE, plays a major role in advancing veterans health care through research. The excellence of our NCIRE and SFVAMC investigators, all of whom are UC San Francisco faculty members, is fundamental to our success in developing cutting edge knowledge that will advance medical treatments of veterans and others, both locally and worldwide.

Paul Volberding, MD
Chair, NCIRE Board of Directors
Chief of Medicine, SFVAMC

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Geon-Ho Jahng, PhD

Research Scientist, Radiology Service, SFVAMC
Assistant Adjunct Professor of Radiology, UCSF

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Novel Magnetic Resonance Imaging (MRI) Techniques to Measure Brain Blood Flow

Dr. Jahng's research focus is to develop and improve two relatively new methods that measure functional and physiological changes in brain disorders: arterial spin labeling (ASL) perfusion-MRI and diffusion tensor imaging (DTI)-MRI, and to apply these novel methods in the clinical setting. Clinicians can use these methods, which provide accurate measurement of blood flow in the brains of patients, to better diagnose and treat diseases such as Alzheimer's. 

Jahng G-H, Zhu X-P, Matson GB, Weiner MW, Schuff N. 2003. Improved perfusion weighted MRI by a novel double inversion with proximal labeling of both tagged and control acquisitions. Magn Reson Med 49:307-314.

 Jahng G-H, Song E, Zhu X-P, Matson GB, Weiner MW, Schuff N. 2005. Human brain: Reliability and reproducibility of pulsed arterial spin labeled perfusion MR imaging. Radiology 234:909-916.