About Proton TherapyProton beam radiation therapy accurately delivers targeted radiation doses with complete proton energy absorption at predictable tissue depth, thus allowing precise radiation delivery adjacent to critical structures and lower radiation doses to healthy structures. Proton therapy, because it can so precisely target tumors, has proven very effective at treating specific cancers and patients report fewer side effects. MD Anderson Orlando's proton therapy center will treat cancers of the brain, spine, lung and prostrate as well as pediatric cancers. Combining the elements of a superconducting synchrocyclotron mounted on a gantry with accelerator technology that has proven to be reliable and simple for the user, the MEVION S250 significantly reduces the cost, size and complexity of proton technology, and promises to make this innovative therapy accessible, affordable and practical. About MD Anderson Cancer Center Orlando MD Anderson Cancer Center Orlando, part of Orlando Health, is affiliated with The University of Texas MD Anderson Cancer Center in Houston. U.S. News & World Report recently ranked MD Anderson Cancer Center as the top cancer treatment center in the U.S. and has ranked it as one of the top two cancer centers for the past 13 years. Orlando Health, a 1,882-bed community-owned, Florida not-for-profit organization established in 1918, annually serves nearly 2 million Central Florida residents and more than 4,500 international patients. More information is available at www.mdacco.com. About AMS 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 SM concept. AMS owns a preferred stock investment in Mevion Medical Systems, Inc., developer of the compact MEVION S250 Proton Therapy System. Safe Harbor Statement This press release may be deemed to contain certain forward-looking statements with respect to the financial condition, results of operations and future plans of American Shared Hospital Services, which involve risks and uncertainties including, but not limited to, the risks of the Gamma Knife and radiation therapy businesses, the risks of developing The Operating Room for the 21st Century program, and the risks of investing in a development-stage company, Mevion Medical Systems, Inc., without a proven product. Further information on potential factors that could affect the financial condition, results of operations and future plans of American Shared Hospital Services is included in the filings of the Company with the Securities and Exchange Commission, including the Company's Annual Report on Form 10-K for the year ended December 31, 2011, the Quarterly Report on form 10-Q for the quarter ended March 31, 2012, the Quarterly Reports on Form 10-Q and 10-Q/A for the quarter ended June 30, 2012, and the definitive Proxy Statement for the Annual Meeting of Shareholders held on June 7, 2012.