Alliance HealthCare Services (NYSE:AIQ) announced today that it will host a conference call and webcast on Thursday, December 22, 2011 at 8:30 a.m. Eastern Time to discuss the Company’s full year 2012 financial guidance, which is scheduled to be released after the market closes on Wednesday, December 21, 2011. The call may also include a discussion of future expectations, strategic initiatives and other matters related to the Company's business. Paul S. Viviano, Chairman and Chief Executive Officer, is scheduled to host the call. Also scheduled to participate is Howard K. Aihara, Executive Vice President and Chief Financial Officer. The conference call can be accessed at (888) 694-4676 (United States) or (973) 582-2737 (International). Interested parties should call at least 5 minutes prior to the call to register. A telephone replay will be available until January 22, 2012. The telephone replay can be accessed by calling (855) 859-2056 (United States) or (404) 537-3406 (International). The conference call identification number is 37189500. Additionally, a live webcast of the call will be available on the Company’s website at www.alliancehealthcareservices-us.com. Click on Audio Presentations in the Investors section of the website to access the link. A replay of the webcast will be available on the Company’s website until January 22, 2012. About Alliance HealthCare Services Alliance HealthCare Services is a leading national provider of advanced outpatient diagnostic imaging and radiation therapy services based upon annual revenue and number of systems deployed. Alliance focuses on MRI, PET/CT and CT through its Imaging division and radiation therapy through its Oncology division. With more than 2,300 team members committed to providing exceptional patient care and exceeding customer expectations, Alliance provides quality clinical services for over 1,000 hospitals and other healthcare partners in 45 states. Alliance operates 570 diagnostic imaging and radiation therapy systems. The Company is the nation’s largest provider of advanced diagnostic mobile imaging services and one of the leading operators of fixed-site imaging centers, with 135 locations across the country. Alliance also operates 37 radiation therapy centers, including 16 dedicated stereotactic radiosurgery facilities, many of which are operated in conjunction with local community hospital partners, providing treatment and care for cancer patients. With 16 stereotactic radiosurgery facilities in operation, Alliance is among the leading providers of stereotactic radiosurgery nationwide.