Alliance HealthCare Services Schedules Conference Call and Webcast to Review Second Quarter 2009 Financial Results

Alliance HealthCare Services (NYSE:AIQ) announced today that it will host a conference call and webcast on Thursday, July 30, 2009 at 8:30 a.m. Eastern Time to discuss the Company’s second quarter 2009 financial results, which are scheduled to be released after the market closes on Wednesday, July 29, 2009. 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 October 30, 2009. The telephone replay can be accessed by calling (800) 642-1687 (United States) or (706) 645-9291 (International). The conference call identification number is 21097192.

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 October 30, 2009.

About Alliance HealthCare Services

Alliance HealthCare Services is a leading national provider of shared-service and fixed-site diagnostic imaging services, based upon annual revenue and number of diagnostic imaging systems deployed, and a provider of radiation therapy services. Alliance provides imaging and therapeutic services primarily to hospitals and other healthcare providers on a shared and full-time service basis, in addition to operating a growing number of fixed-site imaging centers. The Company had 501 diagnostic imaging and radiation therapy systems, including 294 MRI systems and 119 PET or PET/CT systems, and served over 1,000 clients in 46 states at March 31, 2009. The Company operated 106 fixed-site imaging centers (four in unconsolidated joint ventures), which includes systems installed in hospitals or other buildings on or near hospital campuses, medical groups’ offices, or medical buildings and retail sites. The Company also operated 22 radiation therapy centers and stereotactic radiosurgery facilities (two radiation therapy centers are in unconsolidated joint ventures) as of March 31, 2009.