RadNet, Inc. Closes the Previously Announced Acquisition of the Papastavros Group of Imaging Centers

LOS ANGELES, Calif., March 14 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, has closed the previously announced acquisition of substantially all of the assets of Papastavros’ Associates Medical Imaging and related entities.

Founded in 1958, Papastavros is one of the largest and most established outpatient imaging practices in Delaware.  The 12 Papastavros centers offer a combination of MRI, CT, PET, nuclear medicine, mammography, bone densitometry, fluoroscopy, ultrasound and X-ray.

About RadNet, Inc.

RadNet, Inc. is a national market leader providing high-quality, cost-effective diagnostic imaging services through a network of 143 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.

CONTACTS:

RadNet, Inc.

Mark Stolper, 310-445-2800

Chief Financial Officer

Integrated Corporate Relations, Inc.

John Mills, 310-954-1105