Tarzana Advanced Imaging, a Radnet Center of Primedex Health Systems, Installs State-of-the-Art MRI System

Powerful Diagnostic Imaging Technology Enables Faster, More Detailed Exams

TARZANA, Calif.--(BUSINESS WIRE)--March 7, 2005-- Primedex Health Systems, Inc. (OTCBB:PMDX - News) announced today that its center, Tarzana Advanced Imaging Center (5536 Reseda Boulevard, Tarzana), introduced a new, state-of-the-art magnetic resonance imaging (MRI) scanner that will help physicians diagnose disease with greater speed and confidence. With a magnet strength of 3.0 Tesla, the GE Healthcare Signa EXCITE 3.0T system is the most powerful MRI scanner available for clinical use.

Considered the most advanced technology of its kind in the world, the scanner will provide doctors at Tarzana Advanced Imaging Center with highly detailed pictures of anatomy and pathology to help them evaluate a wide range of conditions, including stroke, cancer, and musculoskeletal and heart disease.

"This system is the best of all worlds -- it gives us more information to diagnose disease while allowing us to reduce the length of the exam for the patient," said Ray Gerena, Site Manager. "We can be more confident in the results, while our patients can be more comfortable."

The new scanner also features GE's leading-edge EXCITE data management platform. This breakthrough enables Tarzana Advanced Imaging to offer patients more sophisticated exams, such as functional imaging and spectroscopy. "The Signa scanner is built precisely to handle the types of studies that are becoming increasingly important in the diagnosis of disease," said Gerena. "Together with our state-of-the-art PET/CT scanner, it's one more way we're fulfilling our commitment to keeping patients at the leading edge of healthcare."

About Primedex Health Systems, Inc.
Primedex Health Systems, Inc., is the California market leader in providing high-quality, cost-effective diagnostic imaging services through a network of fully-owned and operated outpatient imaging centers. In fiscal 2004, at its 56 facilities, Primedex and its subsidiaries performed 946,928 diagnostic radiology and imaging procedures. At October 31, 2004, together with Beverly Radiology Medical Group, the medical group that provides medical services to the majority of the Company's locations, the Company had a total of 911 full-time and 422 part-time and per-diem employees.

Tarzana Advanced Imaging Center
Kasey Esparza
kesparza@radnetonline.com