ITEM 1.

BUSINESS

GENERAL

American Shared Hospital Services (“ASHS” and, together with its subsidiaries, the “Company”) provides Gamma Knife stereotactic radiosurgery equipment and radiation therapy and related equipment to nineteen (19) medical centers in sixteen (16) states in the United States and Turkey, as of March 1, 2012. The Company provides Gamma Knife services through its 81% indirect interest in GK Financing, LLC, a California limited liability company (“GKF”). The remaining 19% of GKF is owned by GKV Investments, Inc., a wholly owned U.S. subsidiary of Elekta AG, a Swedish company (“Elekta”). Elekta is the manufacturer of the Leksell Gamma Knife â (the “Gamma Knife”). GKF is a non-exclusive provider of alternative financing services for Elekta Gamma Knife units.

GKF has established the wholly-owned subsidiaries, GK Financing U.K., Limited (“GKUK”) and Instituto de Gamma Knife del Pacifico S.A.C. (“GKPeru”), and the 70% majority owned subsidiary EWRS, LLC (“EWRS”) for the purpose of providing similar Gamma Knife services in England, Peru and Turkey, respectively. The remaining 30% of EWRS is owned by EMKA, Ltd, a wholly owned U.S. subsidiary of Ozyurek, A.S., a Turkish company which is a distributor of Gamma Knife and other equipment in Turkey. EWRS owns 100% of EWRS Tibbi Cihazlar Ticaret Ltd Sti (“EWRS Turkey”). GKF also owns a 51% interest in Albuquerque GK Equipment, LLC (“AGKE”) and Jacksonville GK Equipment, LLC (“JGKE”). The remaining 49% in each of these companies is owned by various physician groups.

Gamma Knife revenue accounted for 95% of the Company’s revenue in 2011. The Company also provides Image Guided Radiation Therapy (“IGRT”) and related equipment to two medical centers located in Massachusetts and Turkey which accounted for 5% of the Company’s revenue in 2011.

In April 2006, the Company invested $2,000,000 for a minority equity interest in Mevion Medical Systems, Inc. (formerly Still River Systems, Inc.) (“Mevion”), a development-stage company based in Littleton, Massachusetts which, in collaboration with scientists from MIT’s Plasma Science and Fusion Center, is developing a medical device for the treatment of cancer patients using proton beam radiation therapy (“PBRT”). In September 2007 and December 2011 the Company invested approximately $617,000 and $70,000, respectively, for additional equity interests in Mevion. The Company has deposited an additional $2,500,000 towards the purchase of three Mevion S250 (“Mevion S250”) PBRT systems from Mevion for anticipated delivery beginning in 2013. Mevion has received Conformite Europeene Mark (“CE Mark”) certification for the Mevion S250 PBRT system, which allows Mevion to market, sell and install the system in the European Union and in any country recognizing CE Mark approval. Mevion has filed a 510(k) application for marketing clearance with the U.S. Food and Drug Administration (“ FDA”).

The Company is also seeking to expand its financing model to the supply of multi-room PBRT systems to major medical centers in the United States and abroad. This effort remains in the development stage and no significant revenues are expected in the next two years.

The Company continues to develop its design and business model for “The Operating Room for the 21 ^st Century” â (“OR21” â ). OR21 is not expected to generate significant revenue within the next twelve months.

The Company was incorporated in the State of California in 1983 and its predecessor, Ernest A. Bates, M.D., Ltd. (d/b/a American Shared Hospital Services), a California limited partnership, was formed in June 1980.

OPERATIONS

Gamma Knife Operations

Gamma Knife stereotactic radiosurgery, a non-invasive procedure, is an alternative to conventional brain surgery or can be an adjunct to conventional brain surgery. Compared to conventional surgery, Gamma Knife radiosurgery usually involves shorter patient hospitalization, lower risk of complications and can be provided at a lower cost. Typically, Gamma Knife patients resume their pre-surgical activities one or two days after treatment. The Gamma Knife treats patients with 201 single doses of gamma rays that are focused with great precision on small and medium size, well circumscribed and critically located structures in the brain. During 2006 Elekta introduced a new Gamma Knife model, the Perfexion™ unit (“Perfexion”), which treats patients with 192 single doses of gamma rays and will also provide the ability to perform procedures on areas of the upper cervical spine. The Gamma Knife delivers a concentrated dose of gamma rays from Cobalt-60 sources housed in the Gamma Knife. The Cobalt-60 sources converge at the target area and deliver a dose that is high enough to destroy the diseased tissue without damaging surrounding healthy tissue.

The Gamma Knife treats selected malignant and benign brain tumors, arteriovenous malformations, and functional disorders including trigeminal neuralgia (facial pain). Research is being conducted to determine whether the Gamma Knife can be effective in the treatment of epilepsy and other functional disorders.

As of December 31, 2011, there were approximately 126 Gamma Knife sites in the United States and more than 320 units in operation worldwide. Based on the most recent available data, an estimated percentage breakdown of Gamma Knife procedures performed in the U.S. by indications treated is as follows: malignant (44%) and benign (35%) brain tumors, vascular disorders (13%), and functional disorders (8%).

The Company, as of March 1, 2012, has nineteen (19) Gamma Knife units located at eighteen (18) sites in the United States and one site in Turkey. The Company’s first Gamma Knife commenced operation in September 1991. The Company’s Gamma Knife units performed approximately 2,000 procedures in 2011 for a cumulative total of approximately 26,400 procedures through December 31, 2011.

Revenue from Gamma Knife services for the Company during each of the last five (5) years ended December 31, and the percentage of total revenue of the Company represented by the Gamma Knife for each of the last five years, are set forth below:

The Company conducts its Gamma Knife business through its 81% indirect interest in GKF. The remaining 19% interest is indirectly owned by Elekta. GKF, formed in October 1995, is managed by its policy committee. The policy committee is composed of one representative from the Company, Ernest A. Bates, M.D., ASHS’s Chairman and CEO, and one representative from Elekta. The policy committee sets the operating policy for GKF. The policy committee may act only with the unanimous approval of both of its members. The policy committee selects a manager to handle GKF’s daily operations. Craig K. Tagawa, Chief Executive Officer of GKF and Chief Operating and Financial Officer of ASHS, serves as GKF’s manager.

GKF’s profits and/or losses and any cash distributions are allocated based on membership interests. GKF’s operating agreement requires that it have a cash reserve of at least $50,000 before cash distributions are made to its members. From inception to December 31, 2011, GKF has distributed $36,450,000 to the Company and $8,550,000 to the non-controlling member.

Image Guided Radiation Therapy Operations

The Company’s radiation therapy business currently consists of one IGRT system that began operation in September 2007, and another that began operation in December 2011, both at existing Gamma Knife customer sites. Revenue generated under IGRT services accounted for approximately 5% of the Company’s total revenue in 2011.

IGRT technology integrates imaging and detection components into a state-of-the-art linear accelerator, allowing clinicians to plan treatment, verify positioning, and deliver treatment with a single device, providing faster, more effective radiation therapy with less damage to healthy tissue.  IGRT captures cone beam imaging, fluoroscopic and/or x-ray images on a daily basis, creating three-dimensional images that pinpoint the exact size, location and coordinates of tumors. Once tumors are pinpointed, the system delivers ultra-precise doses of radiation which ultimately leads to improved patient outcomes.

Based on the most recently available information, there are approximately 4,000 linear accelerator based radiation therapy units installed in the United States, and it is estimated that a majority of these units provide IMRT, IGRT or a combination of this advanced radiation therapy capability. Radiation therapy services are provided through approximately 2,200 hospital based and free-standing oncology centers.

Additional information on our operations can be found in Item 6–“Selected Financial Data”, Item 7–“Management’s Discussion and Analysis of Financial Condition and Results of Operations” and Note 1 of our consolidated financial statements beginning on page A-8 of this report.

CUSTOMERS

The Company’s current business is the outsourcing of stereotactic radiosurgery services and radiation therapy services. The Company typically provides the equipment, as well as planning, installation, reimbursement and marketing support services. The majority of the Company’s customers pay the Company on a fee per use basis. The market for these services primarily consists of major urban medical centers. The business is capital intensive; the total cost of a Gamma Knife or IGRT facility usually ranges from $3 million to $5.5 million, including equipment, site construction and installation. The Company pays for the equipment and the medical center generally pays for site and installation costs. The following is a listing of the Company’s sites as of March 1, 2012:

The Company’s fee per use agreement is typically for a ten year term. The fixed fee per use reimbursement amount that the Company receives from the customer is based on the Company’s cost to provide the service and the anticipated volume of the customer. The Gamma Knife contracts signed by the Company typically call for a fee ranging from $7,500 to $9,500 per procedure. There are no minimum volume guarantees required of the customer. Typically, GKF is responsible for providing the Gamma Knife and related ongoing Gamma Knife equipment expenses (i.e., personal property taxes, insurance, and equipment maintenance) and also helps fund the customer’s Gamma Knife marketing. The customer generally is obligated to pay site and installation costs and the costs of operating the Gamma Knife. The customer can either renew the agreement or terminate the agreement at the end of the contractual term. If the customer chooses to terminate the agreement, then GKF removes the equipment from the medical center for possible placement at another site.

The Company’s revenue sharing agreements (“retail”) are for a period of ten to fifteen years. Instead of receiving a fixed fee, the Company receives all or a percentage of the reimbursement (exclusive of physician fees) received by the customer. The Company is at risk for any reimbursement rate changes for radiosurgery or radiation therapy services by the government or other third party payors. Other than one site, there are no minimum volume guarantees required of the customer.

In 2011, one customer accounted for approximately 25% of the Company’s total revenue. Included in total revenue was $4,984,000 in equipment sales revenue to this customer whose contract ended. Excluding this transaction, there were two customers who accounted for approximately 13% and 11% of revenue. In 2010, one customer accounted for approximately 13% of the Company’s total revenue. In 2009, two customers accounted for approximately 14% and 10% each of the Company’s total revenue.

MARKETING

The Company markets its services through its preferred provider status with Elekta and a direct sales effort led by its Vice President of Sales and Business Development and its Chief Operating Officer. The major advantages to a health care provider in contracting with the Company for Gamma Knife services include:

FINANCING

The Company’s U.S. IGRT site is owned by ASHS and is financed at approximately 100% of the total project cost, under a loan that fully amortizes over an 84-month period and is fully collateralized by the equipment, the customer contract and accounts receivable.

The Company’s Gamma Knife business is operated through GKF. GKF generally finances its U.S. Gamma Knife units, upgrades and additions with loans or capital leases from various finance companies for 100% of the cost of each Gamma Knife, plus any sales tax, customs and duties. GKF’s international operations are financed at approximately 85% of the cost of the equipment. The financing is predominantly fully amortized over an 84-month period and is collateralized by the equipment, customer contracts and accounts receivable, and is generally without recourse to the Company and Elekta.

COMPETITION

Conventional neurosurgery and radiation therapy are the primary competitors of Gamma Knife radiosurgery. Gamma Knife radiosurgery has gained acceptance as an alternative and/or adjunct to conventional surgery due to its more favorable morbidity outcomes for certain procedures as well as its non-invasiveness. Utilization of the Company’s Gamma Knife units is contingent on the acceptance of Gamma Knife radiosurgery by the customer’s neurosurgeons, radiation oncologists and referring physicians. In addition, the utilization of the Company’s Gamma Knife units is impacted by the proximity of competing Gamma Knife centers and providers using other radiosurgery devices.

The Company’s ability to secure additional customers for Gamma Knife services and other radiosurgery and radiation therapy services is dependent on its ability to effectively compete against (i) Elekta, the manufacturer of the Gamma Knife, (ii) manufacturers of other radiosurgery and radiation therapy devices, and (iii) other companies that outsource these services. The Company does not have an exclusive relationship with Elekta or other manufacturers and has previously lost sales to customers that chose to purchase equipment directly from manufacturers. The Company may continue to lose future sales to such customers and may also lose sales to the Company’s competitors.

GOVERNMENT PROGRAMS

The Medicare program is administered by the Centers for Medicare and Medicaid Services (“CMS”) of the U.S. Department of Health and Human Services (“DHHS”). Medicare is a health insurance program primarily for individuals 65 years of age and older, certain younger people with disabilities, and people with end-stage renal disease, and is provided without regard to income or assets.

The Medicare program is subject to statutory and regulatory changes, administrative rulings, interpretations and determinations, requirements for utilization review, and federal and state funding restrictions, all of which could materially increase or decrease payments from these government programs in the future, as well as affect the cost of providing services to patients and the timing of payments to our client hospitals.

The Company’s Gamma Knife and radiation therapy customers receive payments for patient care from federal government and private insurer reimbursement programs. Currently in the United States, Gamma Knife services are performed primarily on an out-patient basis. Gamma Knife patients with Medicare as their primary insurer, treated on either an in-patient or out-patient basis, comprise an estimated 30-40% of the total Gamma Knife patients treated nationwide. Radiation therapy patients with Medicare as their primary insurer are treated primarily on an out-patient basis, and comprise an estimated 45% to 50% of the total radiation therapy patients treated. The Company estimates that its percentage of patients with Medicare as their primary insurer approximates these national averages.

A Prospective Payment System ("PPS") is utilized to reimburse hospitals for care given to hospital in-patients covered by federally funded reimbursement programs. Patients are classified into a Diagnosis Related Group ("DRG") in accordance with the patient's diagnosis, necessary medical procedures and other factors. Patient reimbursement is limited to a predetermined amount for each DRG. The reimbursement payment may not necessarily cover the cost of all medical services actually provided because the payment is predetermined. Effective October 1, 1997, Gamma Knife services for Medicare hospital in-patients are reimbursed under various DRG codes.

In 1986 and again in 1990, Congress enacted legislation requiring the DHHS to develop proposals for a PPS for Medicare out-patient services. DHHS proposed a new payment system, Ambulatory Payment Classifications (“APC”), which affects all out-patient services performed in a hospital based facility. APC implementation took place in the third quarter of 2000.

The APC consists of 346 clinically homogenous classifications or groupings of codes that are typically used in out-patient billing. Out-patient services are bundled with fixed rates of payment determined according to specific regional and national factors, similar to that of the in-patient PPS.

The Gamma Knife APC rate is modified periodically but the total reimbursement amount has historically remained fairly constant. Effective January 1, 2012, total Gamma Knife reimbursement based on all commonly used billing codes will have a decrease of approximately 2% (to approximately $9,308) compared to 2011. This follows a 4% increase in 2011, a 3% decrease in 2010 and a 5% decrease in 2009 compared to the prior years, respectively. The Company has five Gamma Knife contracts from which its revenue is directly affected by changes in payment rates under the APC system.

IGRT is a relatively new service to radiation oncology. The 2005 through 2007 APC payment rates averaged approximately $80 for each of five procedure codes. In 2008 DHHS determined that these services were to be packaged into other services. As a result, there are currently no specific outpatient payment rates for IGRT, and reimbursement is made through various packaged codes. However, standard radiation therapy services are reimbursed by CMS and other third party payors.

We are unable to predict the effect of future government health care funding policy changes on operations. If the rates paid by governmental payers are reduced, if the scope of services covered by governmental payers is limited, or if one or more of our hospital clients are excluded from participation in the Medicare program or any other government health care program, there could be a material adverse effect on our business.

Affordable Care Act

In March 2010, President Obama signed the Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act of 2010, (“Affordable Care Act”) into law, which will result in significant changes to the health care industry. The primary goal of the legislation is to extend health care coverage to approximately 32 million uninsured legal U.S. residents through both an expansion of public programs and reforms to private sector health insurance. The expansion of insurance coverage is expected to be funded in part by measures designed to promote quality and cost efficiency in health care delivery and by budgetary savings in the Medicare and Medicaid programs. Because the Company is not a health care provider, we are not directly affected by the law, but we could be indirectly affected principally as follows:

We are unable to predict with certainty the full impact of the Affordable Care Act on our future revenues and operations at this time due to the law’s complexity, the limited amount of guidance available, pending court challenges and possible amendments.

GOVERNMENT REGULATION

The payment of remuneration to induce the referral of health care business has been a subject of increasing governmental and regulatory focus in recent years. Section 1128B(b) of the Social Security Act (sometimes referred to as the "federal anti-kickback statute") provides criminal penalties for individuals or entities that offer, pay, solicit or receive remuneration in order to induce referrals for items or services for which payment may be made under the Medicare and Medicaid programs and certain other government funded programs. The Affordable Care Act amended the anti-kickback statute to eliminate the requirement of actual knowledge, or specific intent to commit a violation, of the anti-kickback statute. The Social Security Act provides authority to the Office of Inspector General through civil proceedings to exclude an individual or entity from participation in the Medicare and state health programs if it is determined any such party has violated Section 1128B(b) of the Social Security Act. The Company believes that it is in compliance with the federal anti-kickback statute. Additionally, the Omnibus Budget Reconciliation Act of 1993, often referred to as "Stark II", bans physician self-referrals to providers of designated health services with which the physician has a financial relationship. On September 5, 2007, the third and final phase of the Stark regulations (Phase III) was published. The term "designated health services" includes, among others, radiation therapy services and in-patient and out-patient hospital services. On January 1, 1995, the Physician Ownership and Referral Act of 1993 became effective in California. This legislation prohibits physician self-referrals for covered goods and services, including radiation oncology, if the physician (or the physician's immediate family) concurrently has a financial interest in the entity receiving the referral. The Company believes that it is in compliance with these rules and regulations.

On August 19, 2008, the CMS published a final rule relating to inpatient hospital services paid under the Inpatient Prospective Payment System for discharges in the Fiscal Year 2009 (the “Final Rule”). Among other things, the Final Rule prohibits “per-click payments” to certain physician lessors for services rendered to patients who were referred by the physician lessor. This prohibition on per-click payments for leased equipment used in the treatment of a patient referred to a hospital lessee by a physician lessor applies regardless of whether the physician himself or herself is the lessor or whether the lessor is an entity in which the referring physician has an ownership or investment interest. The effective date of this prohibition was October 1, 2009. However, referrals made by a radiation oncologist for radiation therapy or ancillary services necessary for, and integral to, the provision of radiation therapy (such as Gamma Knife services) are not subject to this prohibition so long as certain conditions are met. GK Financing’s majority owned subsidiaries, Albuquerque GK Equipment, LLC (“AGKE”) and Jacksonville GK Equipment, LLC (“JGKE”) have minority ownership interests that are held solely by radiation oncologists, who are otherwise exempt from the referral prohibition under the Final Rule. The Company believes it is in compliance with the Final Rule.

A range of federal civil and criminal laws target false claims and fraudulent billing activities. One of the most significant is the Federal False Claims Act, which prohibits the submission of a false claim or the making of a false record or statement in order to secure a reimbursement from a government-sponsored program. In recent years, the federal government has launched several initiatives aimed at uncovering practices which violate false claims or fraudulent billing laws. Claims under these laws may be brought either by the government or by private individuals on behalf of the government, through a "whistleblower" or "qui tam" action. The Company believes that it is in compliance with the Federal False Claims Act; however, because such actions are filed under seal and may remain secret for years, there can be no assurance that the Company or one of its affiliates is not named in a material qui tam action.

Legislation in various jurisdictions requires that health facilities obtain a Certificate of Need ("CON") prior to making expenditures for medical technology in excess of specified amounts. Four of the Company’s existing customers were required to obtain a CON or its equivalent. The CON procedure can be expensive and time consuming and may impact the length of time before Gamma Knife services commence. CON requirements vary from state to state in their application to the operations of both the Company and its customers. In some jurisdictions the Company is required to comply with CON procedures to provide its services and in other jurisdictions customers must comply with CON procedures before using the Company's services. The Company is unable to predict if any jurisdiction will eliminate or alter its CON requirements in a manner that will increase competition and, thereby, affect the Company's competitive position.

The Company's Gamma Knife units contain Cobalt 60 radioactive sources. The medical centers that house the Company's Gamma Knife units are responsible for obtaining possession and user's licenses for the Cobalt 60 source from the Nuclear Regulatory Commission.

Standard linear accelerator equipment utilized to treat patients is regulated by the FDA. The licensing is obtained by the individual medical center operating the equipment.

The Company believes it is in substantial compliance with the various rules and regulations that affect its businesses.

INSURANCE AND INDEMNIFICATION

The Company's contracts with equipment vendors generally do not contain indemnification provisions. The Company maintains a comprehensive insurance program covering the value of its property and equipment, subject to deductibles, which the Company believes are reasonable.

The Company's customer contracts generally contain mutual indemnification provisions. The Company maintains general and professional liability insurance. The Company is not involved in the practice of medicine and therefore believes its present insurance coverage and indemnification agreements are adequate for its business.

PROTON BEAM RADIATION THERAPY BUSINESS

PBRT is an alternative to traditional external beam, photon based radiation delivered by linear accelerators. PBRT, first clinically introduced in the 1950s, has physics advantages compared to photon based systems which allow PBRT to deliver higher radiation doses to the tumor with less radiation to healthy tissue. PBRT currently treats prostate, eye, cranial-spinal, head and neck, lung, liver and breast tumors. In excess of 80,000 patients have been treated with protons worldwide.

Introduction of PBRT in the United States, until recently, has been limited due to lack of adequate reimbursement and the high capital costs of these projects. The Company believes that the current development of one and two treatment room PBRT systems at lower capital costs, and the recent implementation of reimbursement rates for PBRT from the CMS will help make this technology available to a larger segment of the market.

There are several competing manufacturers of proton beam systems, including Mevion, IBA Particle Therapy Inc., Hitachi Ltd., Optivus Proton Therapy Inc., Varian Medical Systems, Inc. (Accel), Sumitomo Heavy Industries and Mitsubishi Electric. The Company has invested in Mevion and has made deposits towards the purchase of three of the Mevion S250 systems. The Mevion system potentially provides cancer centers the opportunity to introduce single treatment room PBRT services with cost in the range of approximately $20 to $25 million rather than four and five PBRT treatment room programs costing in excess of $120 million. The Mevion system is not yet FDA approved and there can be no assurance that it will be approved.

The Company believes the business model it has developed for use in its Gamma Knife and radiation therapy businesses can be tailored for the PBRT market segment. The Company is targeting large, hospital based cancer programs. The Company’s ability to develop a successful PBRT financing entity depends on the decision of cancer centers to self fund or to fund the PBRT through conventional financing vehicles, the Company’s ability to capture market share from competing alternative PBRT financing entities, and the Company’s ability to raise capital to fund PBRT projects.

EMPLOYEES

At December 31, 2011, the Company employed nine (9) people on a full-time basis. None of these employees is subject to a collective bargaining agreement and there is no union representation within the Company. The Company maintains various employee benefit plans and believes that its employee relations are good.

EXECUTIVE OFFICERS OF THE COMPANY

The following table provides current information concerning those persons who serve as executive officers of the Company. The executive officers were appointed by the Board of Directors and serve at the discretion of the Board of Directors.

Ernest A. Bates, M.D., founder of the Company, has served in the positions listed above since the incorporation of the Company.  A board-certified neurosurgeon, Dr. Bates is Emeritus Vice Chairman of the Board of Trustees of the Johns Hopkins University and serves on the Board of Visitors of the Johns Hopkins Medical Center and the Johns Hopkins Neurosurgery Advisory Board.  He serves on the boards of the University of Rochester and FasterCures.  Dr. Bates was appointed to the California Commission for Jobs and Economic Growth and the Magistrate Judge Merit Selection Panel. From 1981-1987 he was a member of the Board of Governors of the California Community Colleges, and he served on the California High Speed Rail Authority from 1997 to 2003.  Dr. Bates is a member of the Board of Overseers at the University of California, San Francisco, School of Nursing.  Dr. Bates is a Partner in Black Coyote Chateau Wines, LLC.  He is a graduate of the School of Arts and Sciences of the Johns Hopkins University, and he earned his medical degree at the University of Rochester School of Medicine and Dentistry.

Craig K. Tagawa has served as Chief Operating Officer since February 1999 in addition to serving as Chief Financial Officer since May 1996. Mr. Tagawa also served as Chief Financial Officer from January 1992 through October 1995. Previously a Vice President in such capacity, Mr. Tagawa became a Senior Vice President on February 28, 1993. He is also the Chief Executive Officer of GKF. From September 1988 through January 1992, Mr. Tagawa served in various positions with the Company. He is a former Chair of the Industrial Policy Advisory Committee of the Engineering Research Center for Computer-Integrated Surgical Systems and Technology at The Johns Hopkins University. He received his undergraduate degree from the University of California at Berkeley and his M.B.A. from Cornell University.

Ernest R. Bates joined the Company in January 2007 as Vice President of Sales and Business Development. He was on the Board of Directors of the Company from 2004 through February 2007. Prior to joining the Company, he had been Managing Director, Institutional Fixed Income Sales of HSBC Securities (USA), Inc. since 2003. Mr. Bates has also served as Managing Director, Head of Asian Product for HSBC Securities (USA) Inc. from 1999 to 2003. From 1993 through 1999, Mr. Bates held various positions with Merrill Lynch, last serving as Vice President, European Syndicate for Merrill Lynch International. He received his undergraduate degree from Brown University and a M.B.A. degree from The Wharton Business School. Ernest R. Bates is the son of Chairman of the Board and Chief Executive Officer Dr. Ernest A. Bates.

AVAILABLE INFORMATION

Our Internet address is www.ashs.com . We make available free of charge, through our Internet website under the “Investor Center” tab in the “Corporate” section, our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (“Exchange Act”) as soon as reasonably practicable after such material is electronically filed with or furnished to the SEC. The information contained on our Internet website is not part of this document.

ITEM 1A.

RISK FACTORS

In addition to the other information in this report, the following factors could affect our future business, results of operations, cash flows or financial position, and could cause future results to differ materially from those expressed in any of the forward-looking statements contained in this report.

The Company’s Capital Investment at Each Site is Substantial

Each radiosurgical or radiation therapy device requires a substantial capital investment. In some cases, we contribute additional funds for capital costs and/or annual operating and equipment related costs such as marketing, maintenance, insurance and property taxes. Due to the structure of our contracts with medical centers, there can be no assurance that these costs will be fully recovered or that we will earn a satisfactory return on our investment.

The Market for the Gamma Knife is Limited

There is a limited market for the Gamma Knife, and the market in the United States may be mature. The Company has begun operation at only six new Gamma Knife sites in the United States since 2004. Due to the substantial costs of acquiring a Gamma Knife unit, we must identify medical centers that possess neurosurgery and radiation oncology departments capable of performing a large number of Gamma Knife procedures. As of December 31, 2011, there were approximately 126 operating Gamma Knife units in the United States, of which 18 units were owned by us. There are more than 320 units in operation worldwide, and the Company owned one operational international unit as of December 31, 2011. There can be no assurance that we will be successful in placing additional units at any sites in the future. The Company’s existing contracts with its customers are fixed in length and there can be no assurance that the customers will wish to extend the contract beyond the end of the term.

The Company Has a High Level of Debt

The Company’s business is capital intensive. The Company finances an IGRT system through ASHS and its Gamma Knife units and another IGRT system through its GKF subsidiary. The amounts financed through GKF have been generally non-recourse to ASHS. The Company’s combined long term debt and present value of capital leases totals $35,751,000 as of December 31, 2011 and is collateralized by the Gamma Knife and IGRT equipment and other assets, including accounts receivable and future proceeds from any contract between the Company and any end user of the financed equipment. This high level of debt may adversely affect the Company’s ability to secure additional credit in the future, and as a result may affect operations and profitability. If default on debt occurs in the future, the Company’s creditors would have the ability to accelerate the defaulted loan, to seize the Gamma Knife unit or other equipment with respect to which default has occurred, and to apply any collateral they may have at the time to cure the default. The Company also has a line of credit with a bank, against which it has drawn $7,850,000 as of December 31, 2011.

A Small Number of Customers Account for a Major Portion of our Revenues

A limited number of customers have historically accounted for a substantial portion of the Company’s total revenue, and the Company expects such customer concentration to continue for the foreseeable future. For example, in 2011, one customer accounted for approximately 25% of the Company’s total revenue because of an equipment sale to the customer upon the end of the contract. However, excluding this transaction, the Company had two customers who each accounted for more than 10% of the Company’s revenue, and six customers who accounted for more than 50% of the Company’s revenue during 2011. The loss of a significant customer or a significant decline in the business from the Company’s largest customers could have a material adverse effect on the Company’s business and results of operations.

The Market for the Company’s Services is Competitive

The Company estimates that there are three other companies that actively provide alternative, non-conventional Gamma Knife financing to potential customers. We believe there are no competitor companies that currently have more than six Gamma Knife units in operation. The Company’s relationship with Elekta, the manufacturer of the Leksell Gamma Knife unit, is non-exclusive, and in the past the Company has lost sales to customers that chose to purchase a Gamma Knife unit directly from Elekta. In addition, the Company may continue to lose future sales to such customers and may also lose future sales to its competitors. There can be no assurance that the Company will be able to successfully compete against others in placing future units.

There are Alternatives to the Gamma Knife

Other radiosurgery devices and conventional neurosurgery compete against the Gamma Knife. Each of the medical centers targeted by the Company could decide to acquire another radiosurgery device instead of a Gamma Knife. In addition, neurosurgeons who are primarily responsible for referring patients for Gamma Knife surgery may not be willing to make such referrals for various reasons, instead opting for invasive surgery. There can be no assurance that the Company will be able to secure a sufficient number of future sites or Gamma Knife procedures to sustain its profitability and growth.

International Operations

The Company has made an effort to expand its operations internationally and has active or projected operations in Turkey, Peru and Brazil. International operations can be subject to exchange rate volatility which could have an adverse effect on our financial results and cash flows. In addition, international operations can be subject to legal and regulatory uncertainty and political and economic instability, which could result in problems asserting property or contractual rights, potential tariffs, increased compliance costs, increased regulatory scrutiny, potential adverse tax consequences, the inability to repatriate funds to the United States, and the Company’s inability to operate in those locations.

The Company’s Revenue Could Decline if Federal Reimbursement Rates are Lowered

The amount reimbursed to medical centers for each Gamma Knife or radiation therapy treatment may decline in the future. The reimbursement decrease may come from federally mandated programs (i.e., Medicare and Medicaid) or other third party payor groups. Thirteen of the Company’s nineteen existing contracts in the United States are reimbursed by the medical center to the Company on a fee per use basis. The primary risk under this type of contract is that the actual volume of procedures could be less than projected. However, a significant reimbursement rate reduction may result in the Company restructuring certain of its existing contracts. There are also six contracts in the United States where the Company receives revenue based directly on the amount of reimbursement received for procedures performed. Revenue under those contracts and any future contracts with revenue based directly on reimbursement amounts will be impacted by any reimbursement rate change. Some of the Company’s future contracts for Gamma Knife services may have revenue based on such reimbursement rates instead of a fee per use basis. There can be no assurance that future changes in healthcare regulations and reimbursement rates will not directly or indirectly adversely affect the Company’s Gamma Knife revenue.

New Technology and Products Could Result in Equipment Obsolescence

There is constant change and innovation in the market for highly sophisticated medical equipment. New and improved medical equipment can be introduced that could make the Gamma Knife technology obsolete and that would make it uneconomical to operate. During 2000, Elekta introduced an upgraded Gamma Knife which cost approximately $3.6 million plus applicable tax and duties. This upgrade includes an Automatic Positioning System™ (“APS”), and therefore involves less health care provider intervention. In early 2005, Elekta introduced a new upgrade, the Gamma Knife Model 4C (“Model 4C”). The cost to upgrade existing units to the Model 4C with APS is estimated to be approximately $200,000 to $1,000,000, depending on the current Gamma Knife configuration. In 2006 Elekta introduced a new model of the Gamma Knife, the Perfexion, which costs approximately $4.5 million plus applicable taxes and duties. The Perfexion can perform procedures faster than previous Gamma Knife models and it provides the additional ability to perform procedures on areas of the cervical spine. Existing models of the Gamma Knife are not upgradeable to the Perfexion model. As of March 1, 2012, ten of the Company’s Gamma Knife units are Perfexion models; of the Company’s remaining Gamma Knife units, five are Model 4C with APS and four are upgradeable to more advanced Model 4C units. The failure to acquire or use new technology and products could have a material adverse effect on our business and results of operations.

In addition, there are constant advances made in radiation therapy equipment. The Company purchased IGRT and CT Simulator systems in 2006 with a list price of approximately $8,300,000. As in the Gamma Knife business, new and improved IGRT equipment can be introduced that could make the existing technology obsolete and that would make it uneconomical to operate.

The Company Has Invested in a Proton Beam Business that is Developmental and Unproven

We have committed a substantial amount of our financial resources to next-generation proton beam technology. The PBRT system being developed by Mevion is not commercially proven and cannot be reimbursed by most major insurors prior to FDA approval, which may not be obtained. Prior to that time, we must make progress payments of $6,500,000 for three Mevion S250 systems (the Company has already made deposits of $2,500,000 towards this commitment). There can be no assurance that we will recover this investment or future investments, or our $2,656,000 minority investment in Mevion. Our current belief is that we will begin to receive revenue for PBRT systems placed and financed by us in 2014, assuming FDA approval is obtained.

The Trading Volume of Our Common Stock is Low

Although our common stock is listed on the NYSE Amex Exchange, our common stock has experienced low trading volume, both historically and recently. Reported average daily trading volume in our common stock for the three-month period ended December 31, 2011 was approximately 4,500 shares. There is no reason to think that a more active trading market in our common stock will develop in the future. Limited trading volume subjects our common stock to greater price volatility and may make it difficult for you to sell your shares in a quantity or at a price that is attractive to you.

ITEM 1B.