John Raaf Day Lecture

John RaafThe Department of Neurological Surgery in the OHSU School of Medicine is proud to recognize the accomplishments of John Raaf, M.D., (1905 – 2000), widely regarded as the father of neurosurgery in Oregon. Raaf advanced the profession during his years as chairman of neurosurgery at Good Samaritan Hospital by creating an outstanding resource for the neurosciences community in the Pacific Northwest.

The 23rd John Raaf Day Lecturer — Duke Samson, M.D.

Saturday, October 12, 2013
Center for Health & Healing, 3rd floor; 3070-Room 4
3303 SW Bond Ave, Portland

8:30 am Refreshments
9:30 am The ARUBA trial and its implicatins for the management of brain AVMs
10.30am Break
10.45 am The Myths and Mysteries of Trauma Room One: JFK at Parkland Hospital


Dr. Samson attended Stanford University, CA, where he majored in psychology and played intercollegiate football and rugby. He graduated from Washington University School of Medicine in St Louis, MO, in 1969 and completed a surgical internship at Duke University Medical Center, NC. His neurosurgical residency at the University of Texas Southwestern Medical School, TX, was highlighted by a fellowship with Professor Gerard Guiot in Paris and Professor M.G. Yaşargil in Zurich.  Dr. Samson entered the United States Army Medical Corps in 1975, serving both at Clark Air Force Base in the Republic of the Philippines and Walter Reed Army Medical Center, DC. In 1977 he joined the faculty at Southwestern, focusing his clinical and investigative interests on vascular diseases of the nervous system. Dr. Samson was promoted to Professor of Surgery in 1984 and assumed the chairmanship of the Division of Neurological Surgery at Southwestern the following year.  In 1988, neurosurgery at Southwestern achieved departmental status and he accepted the endowed Kimberly-Clark Distinguished Chair in Mobility Research, established in honor of the division's first chairman. On sabbatical leave from the chairmanship in 1998, Dr. Samson was named Director of the Mobility Foundation, a multi-disciplinary center dedicated to clinical research in cerebrovascular disease and spinal cord injury. He currently holds the Lois C.A. and Darwin E. Smith Distinguished Chair in Neurological Surgery at Southwestern. 

Accreditation CME Credits Available

Oregon Health & Science University School of Medicine is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians.


OHSU School of Medicine, Division of CME, designates this live activity for a maximum of 2.25 AMA PRA Category 1 Credits™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

Target Audience

Neurological surgeons and the neuroscience community.

Course Objectives

To further education of the neuroscience community by introducing innovative, state-of-the art techniques in the field of neurological surgery


Heidi Waldo 503-494-6207, nsg@ohsu.edu


Past John Raaf Day Lecturers

  • Lawrence F. Marshall, M.D. — 1991
  • John A. Jane, M.D., Ph.D. — 1992
  • Julian T. Hoff, M.D. — 1993
  • Albert L. Rhoton Jr., M.D. — 1994
  • Martin H. Weiss, M.D. — 1995
  • Robert H. Wilkins, M.D. — 1996
  • John M. Tew Jr., M.D. — 1997
  • Donlin M. Long, M.D., Ph.D. — 1998
  • Robert Grossman, M.D. — 1999
  • William A. Buchheit, M.D. — 2000
  • Russel Hugo Patterson Jr., M.D. — 2001
  • Charles B. Wilson, M.D. — 2002
  • H. Richard Winn, M.D. — 2003
  • R. Michael Scott, M.D. — 2004
  • David G. Piepgras, M.D. — 2005
  • Edward R. Laws Jr., M.D., F.A.C.S. — 2006
  • Volker K.H. Sonntag, M.D. — 2007
  • A. John Popp, M.D. — 2008
  • William F. Chandler, M.D. — 2009
  • Robert Spetzler, M.D., F.A.C.S. — 2010
  • Roberto C. Heros, M.D., F.A.C.S. — 2011
  • Donald O. Quest, M.D. — 2012