AMERICAN SHARED HOSPITAL SERVICES (NYSE AMEX:AMS), a leading provider of turnkey technology solutions for advanced radiosurgical and radiation therapy services, today announced the election of Dr. David A. Larson and S. Mert Ozyurek to its Board of Directors at the Company's Annual Meeting held on June 9, 2011. With the retirement from the Board of Olin C. Robison, a director since 2003, these two new directors increase AMS' Board to six members, including five outside directors. David A. Larson, M.D., Ph.D., 70 years old, is an internationally recognized authority on brain tumors and central nervous system and body radiosurgery, intensity modified radiotherapy, and highly conformal radiotherapy. He holds a Ph.D. in high energy physics from the University of Chicago and an M.D. from the University of Miami School of Medicine. He completed his medical internship at the University of California, San Francisco, and his radiation oncology residency training at Harvard Medical School, where he also served as attending physician and instructor. Dr. Larson has been a member of the UCSF faculty since 1986, leading to joint professorial appointments in the Departments of Radiation Oncology and Neurosurgery. He served as president of the American Society for Therapeutic Radiology and Oncology, the Northern California Radiation Oncology Society, and the International Stereotactic Radiosurgery Society, and has been recognized as one of America's top doctors every year since 1991. S. Mert Ozyurek, 36 years old, is currently the President of Ozyurek A.S., the preferred supplier of Elekta Gamma Knife systems to hospitals in Turkey, and EMKA, LLC, an affiliate of Ozyurek A.S. in the United States. Prior to that, he served as Vice President in Ozyurek A.S., overseeing international business and business development. He joined Ozyurek A.S. after serving in the Turkish Air Force. Mr. Ozyurek is a partner in the subsidiary that AMS has developed for its future operations in Turkey. He received a B.A. degree from Middle East Technical University in Ankara, Turkey.