Gamma Knife Perfexion System Supplied by American Shared Hospital Services Begins Treating Patients at Northern Westchester Hospital in Mt. Kisco, New York

, a leading provider of turnkey technology solutions for advanced radiosurgical and radiation therapy services, announced today that physicians have begun treating patients with the Gamma Knife Perfexion system it supplied to Northern Westchester Hospital in Mt. Kisco, New York.

AMS Chairman and Chief Executive Officer Ernest A. Bates, M.D., said, "This Perfexion system, the fourteenth in our portfolio, is an upgrade to the Gamma Knife system we originally supplied to Northern Westchester Hospital in 2005. We are glad that our creative financing solutions have made it possible to bring the latest advances in stereotactic radiosurgery to cancer patients throughout the greater Hudson Valley region."

Adele Gargano, Director of the Cancer Treatment and Wellness Center at Northern Westchester Hospital, said, "This Perfexion system is a significant addition to our Cancer Treatment and Wellness Center. We are pleased to partner with American Shared Hospital Services to offer the latest Gamma Knife technology, and proud that Northern Westchester is the first hospital in the Hudson Valley region to offer the Perfexion system for the treatment of brain tumors, trigeminal neuralgia, and other malformations within the brain."

Gamma Knife Perfexion maintains full clinical compatibility with the classic Gamma Knife and is supported by efficacy and outcome data from 600,000 treated patients worldwide and thousands of peer-reviewed scientific articles, making it a proven choice for radiosurgery of the brain. Elekta estimates that the fully automated and efficient single push-button approach can save 3-5 working weeks of physician time per year at an average Gamma Knife center.

American Shared Hospital Services provides turnkey technology solutions for advanced radiosurgical and radiation therapy services. AMS is the world leader in providing Gamma Knife radiosurgery equipment, a non-invasive treatment for malignant and benign brain tumors, vascular malformations and trigeminal neuralgia (facial pain). The Company also offers the latest IGRT and IMRT systems, as well as its proprietary Operating Room for the 21st Century concept. AMS owns a preferred stock investment in Mevion Medical Systems, Inc., developer of the compact MEVION S250 Proton Therapy System.