SOURCE: Gamma Medica, Inc.

June 23, 2005 09:00 ET

Gamma Medica Licenses Pinhole SPECT Technology From Johns Hopkins University

Algorithms Allow High-Resolution and High-Sensitivity 3D Pinhole MicroSPECT® Imaging for Drug Development

NORTHRIDGE, CA -- (MARKET WIRE) -- June 23, 2005 -- Gamma Medica, Inc. (GMI), the Northridge, California, imaging system manufacturer, announced today that it has licensed a breakthrough pinhole image reconstruction method from Johns Hopkins University.

The three-dimensional image reconstruction method allows for rapid processing of accurate, high-resolution pinhole SPECT images, and can also be applied to high-resolution CT imaging in pre-clinical studies.

The reconstruction method was developed by Dr. Benjamin Tsui and Dr. Yuchuan Wang of the Johns Hopkins School of Medicine, where Dr. Tsui is a professor of radiology and electrical and computer engineering, and Dr. Wang is a research fellow. Dr. Tsui is a leading worldwide authority on pinhole SPECT.

"Pinhole SPECT is unusual in medical imaging but is a mainstay in pre-clinical imaging due to its ability to achieve spectacular spatial resolution in very small subjects and simultaneously achieve higher sensitivity than that obtained by imaging with parallel hole collimators," said Dr. Bradley E. Patt, Gamma Medica's President and Chief Executive Officer. "Given the critical importance of this technique, we are extremely happy to be working with Dr. Tsui, who is the utmost expert in this field."

Gamma Medica designs, develops and manufactures next-generation imaging systems for both clinical and pre-clinical applications. The company's gamma cameras combine the highest spatial and spectral resolutions with notebook-type thickness and patent-pending technologies, establishing them as the new standard in high-resolution single-photon imaging. The company was first to market with MicroSPECT®, and its X-SPECT® system is the market leader in the pre-clinical SPECT category. Gamma Medica's X-PET™ system has the highest sensitivity and largest axial field of view among pre-clinical PET systems. The company's X-O™ system is a standalone micro-CT device that can perform full body scans on a wide range of test subjects in less than a minute, making it one of the fastest such systems in the industry. All three systems share a common gantry and are part of the company's FLEX™ platform of pre-clinical imaging systems. Any two systems can be combined in the common gantry, as can all three. Gamma Medica's pre-clinical imaging systems are used by medical researchers and drug companies that use in-vivo imaging techniques and molecular markers to dramatically speed up studies of disease progression and therapy. More information can be found by visiting

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