Affiliated & Adjunct Faculty

Victor Tse, MD, PhD
Clinical Professor (Affiliated)

Victor Tse MD PhD completed his undergraduate and medical training at Clare College and the School of clinical medicine, Cambridge University, England. He finished his PhD in Imperial College of Medicine and Advance  Sciences and Technology, University of London. He finished his Neurology and Neurosurgery residency at Stanford. He has written extensively on tumor angiogenesis and the microenvironment.

Abdulrazag Ajlan, MD
Adjunct Clinical Assistant Professor

Abdulrazag Ajlan specializes in neuro-oncology and skull-based neurosurgery, with an interest in endoscopic procedures. After earning a master's degree in molecular biology, he completed his residency at Montreal, McGill University (Montreal Neurological Institute). He then studied for three years under Dr. Griffith Harsh and Dr. Lawrence Recht at Stanford. Abdul is currently a full-time faculty member at King Saud University, Riyadh, Saudi Arabia and an adjunct professor at Stanford. 


Robert Booth, PhD
Adjunct Professor

Robert Booth completed his undergraduate studies and obtained his PhD in biochemistry from the University of London. He has extensive experience in drug discovery and development within the biopharmaceutical industry. He has also operated within the venture capital industry. He is currently the CEO of Virobay Inc. and serves on the boards of Cymabay Therapeutics, Ab Initio Biotherapeutics and Glialogix.


Gerald Popelka, PhD
Adjunct Professor

Dr. Gerald R. Popelka obtained a PhD degree from the University of Wisconsin, with an emphasis in neuroscience, and completed a two year post doctoral research fellowship in Otolaryngology at UCLA. Prior to this he earned a masters degree in Audiology from Kent State University. He was a full professor at Washington University in St. Louis until he joined the Otolaryngology faculty at Stanford in 2004 where he was also Chief of Audiology for a decade prior to joining the Neurosurgery faculty.


Donald J. Prolo, MD
Clinical Adjunct Professor

Donald J. Prolo, graduated from Stanford University in 1957 with a Bachelor of Arts degree (with Great Distinction), Departmental Honors in Biological Sciences and membership in Phi Beta Kappa.  He achieved his MD degree at Stanford in 1961, having become a member of Alpha Omega Alpha Honor Medical Society in 1960.  After a surgical internship at Johns Hopkins Hospital in Baltimore he completed neurosurgical residency at Stanford in 1970 and was certified by the American Board of Neurological Surgery in 1972. He continued on the full-time faculty one year as Chief of Neurosurgery, Valley Medical Center, founded the Neuroskeletal Transplantation Laboratory and the third human bone and soft tissue bank in the United States, Western Transplantation Services, at the California Institute for Medical Research.  He subsequently continued transplantation research while in private neurosurgical practice in San Jose.

On October 1, 1969 at the Palo Alto Veterans Administration Hospital he pioneered the field of endovascular neurosurgery by being the first to treat an abnormal intracranial condition indirectly through only an extracranial artery with the use of a catheter.  Major intracranial surgery was thereby avoided by introducing a balloon through the cervical carotid artery to the site of this arteriovenous malformation, a carotid-cavernous fistula (Journal of Neurosurgery, August, 1971). Subsequently he designed a catheter, which was used throughout the world for treatment of this condition. (Surgical Neurology, April 1977).

In two JAMA papers published April 30, 1973, he reported his designed Cervical Stabilization-Traction Board for immediate immobilization of the injured cervical spine at injury site and an early unique series of patients with unstable spines utilizing the halo device for immediate and long-term halo-thoracic and halo-pelvic stabilization.

He pioneered the transplantation of human cadaver bone and soft tissues in surgery with basic contributions resulting from canine research and human applications.  These contributions included methods of safe, effective sterilization of allogeneic tissues and their subsequent successful incorporation in canine studies and human applications.  His Neuroskeletal Transplantation Laboratory distributed to neurosurgical, orthopedic and reconstructive surgeons throughout the United States over 50,000 allografts for patients over 20 years (1975-1995) without a single report of bacterial, fungal or viral infection, transmitted by the graft.

Fusing an unstable, often arthritic human lumbar spine for relief of back and leg pain is a common spine surgeon’s challenge.  Doctor Prolo has recently reported his surgical treatment over 25 years (1981-2006) with long-term, dedicated follow-up of patients: 321 patients underwent 339 posterior lumbar interbody fusions with human cadaver bone only.  Successful anatomic fusion was documented by radiographs in 96% of patients with 87% clinical results excellent (52%) or good (35%), determined on the nonparametric Occupational/Functional Clinical Outcome Scale (Prolo Scale) he first reported in 1986.  Fusion rate from this long-term, carefully documented study achieved statistical significance exceeding any other rates published with equally rigorous documentation.