RadNet Announces Agreement to Acquire Six Southern California Imaging Centers from InSight Health Corp.

• Six centers located in the West San Fernando Valley, Westlake/Thousand Oaks and Simi Valley areas

• Substantial cost-savings should result from existing RadNet operations

• Further strengthens RadNet’s position as a leading provider in Southern California’s San Fernando Valley and Ventura County areas

LOS ANGELES, California, February 26, 2008 – RadNet, Inc. (NASDAQ: RDNT), a national leader in providing high-quality, cost-effective diagnostic imaging services through a network of owned and operated outpatient imaging centers, today reported that it has signed a definitive agreement to purchase the assets of six Los Angeles imaging centers from InSight Health Corp. for $8.5 million.  The cash purchase price will be funded by a portion of the recently completed incremental term loan provided by GE Healthcare Financial Services.  The operations of the to-be-acquired centers produce approximately $10 million in annual revenue.

The centers that RadNet will acquire include InSight’s centers in Simi Valley, Thousand Oaks, Westlake, Encino, Van Nuys and Valencia. The facilities operate a combination of imaging modalities, including MRI, CT, X-ray, Ultrasound and Mammography.

“Our existing strong presence in many of these markets positions us to uniquely benefit from consolidation and cost savings available in this transaction.  The acquisition further strengthens our leadership in many of these local markets and is consistent with our strategy of market penetration, regional concentration and multimodality services,” said Dr. Howard Berger, President and Chief Executive Officer of RadNet.

“With so many growth and acquisition opportunities available to us, we are attempting to optimize our use of capital.  This very accretive transaction exemplifies the nature of the tuck-in deals that we feel are most advantageous to our growth and future valuation,” added Dr. Berger.

The acquisition is expected to close in March 2008.

About RadNet, Inc.
RadNet, Inc. is a national market leader providing high-quality, cost-effective diagnostic imaging services through a network of 155 fully-owned and operated outpatient imaging centers.  RadNet’s core markets include California, Maryland and New York.  Together with affiliated radiologists, and inclusive of full-time and per diem employees and technicians, RadNet has a total of approximately 4,000 employees.  For more information, visit http://www.radnet.com.

About Insight Health Corp.
InSight, headquartered in Lake Forest, California, is a nationwide provider of diagnostic imaging services. It serves managed care entities, hospitals and other contractual customers in over 30 states, including the following targeted regional markets: California, Arizona, New England, the Carolinas, Florida and the Mid-Atlantic states. As of December 31, 2007, InSight’s network consists of 97 fixed-site centers and 105 mobile facilities.

Forward Looking Statements
This press release contains forward-looking statements within the meaning of the U.S. Private Securities Litigation Reform Act of 1995. Specifically, statements concerning RadNet’s ability to successfully acquire and integrate new operations as well as RadNet's financial guidance, its statements regarding cost savings, its statements regarding increased business from new equipment or operations, are forward-looking statements within the meaning of the Safe Harbor. Forward-looking statements are based on management's current, preliminary expectations and are subject to risks and uncertainties, which may cause RadNet's actual results to differ materially from the statements contained herein. Further information on potential risk factors that could affect RadNet's business and its financial results are detailed in its most recent Annual Report on Form 10-K and Forms 10Q, as filed with the Securities and Exchange Commission. Undue reliance should not be placed on forward-looking statements, especially guidance on future financial performance, which speaks only as of the date they are made. RadNet undertakes no obligation to update publicly any forward-looking statements to reflect new information, events or circumstances after the date they were made, or to reflect the occurrence of unanticipated events.

RadNet, Inc.
Mark Stolper
Executive Vice President and Chief Financial Officer
310-445-2800

Integrated Corporate Relations, Inc.
John Mills
310-954-1105
jmills@icrinc.com