Alliance Imaging Schedules Conference Call and Webcast to Review 2005 Financial Guidance.

ANAHEIM, Calif. -- Alliance Imaging (NYSE:AIQ) announced today that it will host a conference call and webcast on Monday, December 6, 2004 at 4:00 p.m. Eastern Time to discuss the Company's 2005 financial guidance. Paul S. Viviano, Chairman and Chief Executive Officer, is scheduled to host the call. Also scheduled to participate are Andrew P. Hayek, President and Chief Operating Officer, and R. Brian Hanson, Executive Vice President and Chief Financial Officer.

The conference call can be accessed at 888-689-9529 (United States) or 706-645-0319 (International). Interested parties should call at least 5 minutes prior to the call to register. A telephone replay will be available until March 7, 2005. The telephone replay can be accessed by calling 800-642-1687 (United States) or 706-645-9291 (International). The conference call replay identification number is 2537967.

Additionally, a live webcast of the call will be available on Alliance Imaging's website at www.allianceimaging.com. Click on Audio Presentations in the Investor Relations section of our website to access the link. A replay of the webcast will be available on our website until March 7, 2005.

Alliance Imaging is a leading national provider of diagnostic imaging services. Alliance provides imaging 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 481 diagnostic imaging systems, including 362 MRI systems and 53 PET or PET/CT systems, and 1,342 clients in 43 states at September 30, 2004.