EXHIBIT 99



                          ALLIANCE IMAGING CONCLUDES

                                  PURCHASE OF

                 AMERICAN SHARED'S DIAGNOSTIC IMAGING BUSINESS



ANAHEIM, CA (NOVEMBER 17, 1998) - ALLIANCE IMAGING, INC., the nation's largest 
provider of hospital-based fixed size and mobile magnetic resonance imaging 
("MRI") and computed tomography ("CT") services, announced that it has concluded
its purchase of the medical diagnostic imaging business of American Shared 
Hospital Services ("American Shared").

Shareholders of American Shared approved the sale at a special meeting held in 
San Francisco on Friday, November 13, 1998.  The transaction closed later the 
same day.  The purchase price consisted of approximately $13.6 million in cash, 
and the assumption of liabilities associated with American Shared's diagnostic 
imaging business, including approximately $21 million of debt as of September
30, 1998.

Alliance Imaging, Inc., an affiliate of Apollo Management, L.P., is a leading 
provider of comprehensive diagnostic imaging services to hospitals and other 
healthcare providers.  Services are provided on either mobile, share-user basis 
or on a full-time single-user basis.