AMERICAN SHARED HOSPITAL SERVICES REPORTS 19% INCREASE IN REVENUE AND 15% INCREASE IN OPERATING INCOME FOR THE THIRD QUARTER OF 2006 VERSUS PRIOR YEAR Marks 23 rd Consecutive Quarter of Year-Over-Year Gains in Operating

AMERICAN SHARED HOSPITAL SERVICES REPORTS

19% INCREASE IN REVENUE AND 15% INCREASE IN OPERATING

INCOME FOR THE THIRD QUARTER OF 2006 VERSUS PRIOR YEAR

Marks 23rd Consecutive Quarter of Year-Over-Year Gains in Operating Income

San Francisco, CA, November 3, 2006 AMERICAN SHARED HOSPITAL SERVICES (AMEX,PCX:AMS), a leading

provider of turnkey technology solutions for advanced radiosurgical and radiation therapy services,

today announced a 15% increase in operating income for the third quarter of 2006 compared to the

third quarter of 2005, marking the 23rd consecutive quarter of year-over-year gains in

operating income. Revenue advanced 19% compared to the same period of the prior year.

For the three months ended September 30, 2006, revenue increased to $5,238,000 from $4,402,000 for

the third quarter of 2005. Operating income increased to $1,000,000 from $867,000 a year earlier,

and pre-tax income increased 12% compared to the third quarter of 2005. Net income for third

quarter of 2006 decreased to $425,000, or $0.08 per diluted share, compared to $502,000, or $0.10

per diluted share, for the third quarter of 2005. The decrease in net income for this year s

third quarter versus prior year was solely the result of an increase in the effective income tax

rate to 40% from 21% a year ago, said Chairman and Chief Executive Officer Ernest A. Bates, M.D.

Dr. Bates attributed the increase in third quarter revenue primarily to the maturation of the two

Gamma Knife centers that began treating patients in mid-2005, as well as higher patient volumes at

several of the Company s older centers. Our profitability also continues to benefit from our

rigorous attention to controlling costs, he added.

For the nine months ended September 30, 2006, revenue advanced 15% to $15,592,000 from $13,581,000

for the same period of 2005. Operating income rose 15% to $2,942,000 from $2,557,000, and pre-tax

income increased 16% to $2,162,000 from $1,862,000 a year earlier. Net income for the first nine

months of 2006 increased to $1,309,000, or $0.26 per diluted share, reflecting a 39% effective

income tax rate. This compares to net income for the first nine months of 2005 of $1,288,000, or

$0.26 per diluted share, reflecting a 31% effective income tax rate.

We are pleased that AMS continues to deliver solid growth in revenue and operating earnings from

our current portfolio of radiosurgical assets even as we transition to a new, more ambitious

operating model that we believe will significantly enhance our opportunities for long-term growth.

Our plan is to use AMS creative financing solutions to dramatically expand our growth potential by

offering our clinical partners a full range of advanced treatment simulation and planning equipment

and software as well as the latest technology solutions for radiation oncology delivery. We are

committed to offering our clinical partners today s most advanced radiosurgery and radiation

therapy technology solutions to improve patient outcomes, Dr. Bates said.

We have taken concrete steps to implement this model with the equity investment we made earlier

this year in Still River Systems that gives us a toe-hold in proton beam radiation therapy

(PBRT), a treatment which we believe will be the next major advance in radiation therapy, and the

closing in September of our innovative agreement with Tufts-New England Medical Center to provide

state-of-the-art equipment as part of a complete radiation therapy department upgrade. We expect

our new initiative with Tufts-New England Medical Center to favorably impact our operating results

beginning in mid-2007. At the same time, we continue to pursue opportunities for

current-generation radiation therapy devices and our proprietary Operating Room for the

21st Century concept, Dr. Bates added.

At September 30, 2006, AMS reported working capital of $2,414,000, cash, cash equivalents and

short-term securities of $8,106,000, and long-term securities of $925,000. At December 31, 2005,

working capital was $2,423,000, cash, cash equivalents and short-term securities were $5,835,000,

and long-term securities were $2,797,000. Shareholders equity at September 30, 2006 increased to

$18,943,000 compared to $18,320,000 at December 31, 2005.

Earnings Conference Call

American Shared has scheduled a conference call at 4:00 p.m. EDT (1:00 p.m. PDT) today. To

participate in the live call, dial (800) 471-6718 at least 5 minutes prior to the scheduled start

time. A simultaneous WebCast of the call may be accessed through the Company s website,

www.ashs.com, or through CCBN, www.earnings.com. A replay will be

available for 30 days at these same internet addresses, or by calling (888) 843-8996, pass code

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

services, 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. Through its equity

investment in Still River Systems, AMS also plans to complement these services with the

Clinatron-250 proton beam radiation therapy (PBRT) system, which has not yet been approved by the

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

business, the risks of developing its IMRT and The Operating Room for

programs, and the risks of investing in a development-stage company, Still River 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, 2005, the Form 10-Q for the three months

ended March 31, 2006 and June 30, 2006 and the definitive Proxy Statement for the Annual Meeting of

Shareholders on June 28, 2006.

AMERICAN SHARED HOSPITAL SERVICES

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