1986-11 Professor, Departments of Radiological Sciences, and Electrical and Computer Engineering, University of California - Irvine, Irvine, California

1988 Elected Fellow, IEEE (Nuclear Imaging)

1990-92 Director, Southern California Biomedical Magnetic Resonance Consortium

1991 Elected Fellow, AAPM (X-ray Imaging)

1993-11 Founding Director, Univ. California-Irvine, Health Sciences Research Imaging Center/Later named as Tu & Yuen Center for Functional Onco-Imaging

1993- 95 Consultant, Whitaker Foundation

1993- 94 Chairman, External Advisory Board, Biomedical Nuclear Magnetic Resonance NSF Facility, University of Illinois at Urbana-Champaign.

1994- 11 Professor, Department of Physics, University of California - Irvine, Irvine, California

1994- 99 Director, Neuro-Imaging Core, Southern California Alzheimer’s Disease and Research Consortium

1997- 04 Member, External Advisory Committee, Department of Nuclear Engineering, UC Berkeley

1997-01 Member, Diagnostic Radiology Study Section (RNM), NIH

1998 Elected Fellow, ISMRM (Magnetic Resonance Imaging)

2000 Third Millennium Medal -IEEE.

2000 NPSS Richard Shea Award - IEEE

2000-11 Who’s Who in Medicine and Healthcare

2001-11 Vice Chairman for Research, Department of Radiological Sciences, University of California - Irvine, Irvine, California

2001 Athalie Clarke Achievement Award for Outstanding Research, College of Medicine, University of California - Irvine

2001- Editorial Board Member, Technology in Cancer Research and Treatment

2001-13 Director, Research Imaging Center @ UCI

2002 ATAA Outstanding Achievement in Sciences Award, Washington, DC

2003-06 Member, Medical Imaging Committee (MEDI), NIH

2004-06 Member, NCI Subcommittee-A for Cancer Center Reviews, NIH

2005-09 Who’s Who in American Education

2006 Best Poster Award winner- ISMRM 14th Annual Meeting, Seattle, WA

2008- Editorial Board Member, Journal of Biomedicine and Biotechnology

2009 Best Industrial Innovation Award, World Congress in Medical Physics, Munich, Germany

2010- Member, NIH College of CSR Reviewers.

2010-13 Professor, World Class University Program, Pusan University, Korea

2010- Editorial Board member, Breast Cancer: Targets and Therapy

2011- Adjunct Professor, Department of Physics, Bogazici Universitesi, Istanbul, Turkey

2011- Editor-in-Chief, Advances in Molecular Imaging

2011-14 Recalled Professor, Department of Radiology, Uc Irvine

2011- Professor Emeritus, Department of Radiology, UC Irvine

2011- Director Emeritus, Tu & Yuen Center for Functional Onco-Imaging

2013- Director Emeritus, Research Imaging Center, UC Irvine

2015- International Panel Member, Samsung Research Center, South Korea

2015- Professor, Department of Biomedical Engineering, Izmir Institute of Technology, Izmir, Turkey