IRVINE, Calif., April 12, 2007 (PRIME NEWSWIRE) -- ``As the Homeland Defense arena continues to grow, public companies are using technology employed in other aspects of their business plans for Homeland Defense purposes,'' stated SmallCap Sentinel analyst, D.R. Clark. ``It makes sense for many of these companies to use technology previously created for other applications in the now booming Homeland Defense sector.''

``Companies such as Positron Corporation (OTC BB:POSC.OB - News) illustrate this model,'' Clark added. ``The PET technology company recently announced that through its research and development affiliate, it has filed a provisional patent on a device that is capable of detecting illicit radioactive sources at a distance.''

Positron Corporation engages in the design, manufacture, marketing, and servicing of advanced medical imaging devices utilizing positron emission tomography (PET) technology. Positron Corporation is the first name in positron emission tomography (PET). Positron designs, markets, services and develops software solutions for their advanced medical imaging devices utilizing PET technology.

A complete StockUpTicks.com profile of Positron has been made available at http://stockupticks.com/profiles/2-19-07.html

The stock was first profiled at StockUpTicks.com on February 19, 2007 when it closed at .09 cents. It has reached .14 cents per share since that release.

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An informational report titled ``Homeland Defense and the Market'' is available at http://www.SmallCapSentinel.com

The report details the rise of Homeland Defense as a growth industry and will discuss a variety of homeland defense related public companies including Argon ST, Inc. (NasdaqGS:STST - News), RAE Systems Inc. (AMEX:RAE - News), and DRS Technologies, Inc. (NYSE:DRS - News).

Statements made herein contain forward-looking statements and are subject to significant risks and uncertainties that affect results. SmallCap Sentinel and StockUpTicks.com are properties of Market Pathways Financial Relations Inc. (MP). MP provides no assurance as to the subject company's plans or ability to effect any proposed actions and cannot project capabilities, intent, resources, or experience.

All information contained herein is based upon sources believed to be reliable but no representation is made as to accuracy or completeness. This report is neither a solicitation to buy, nor offer to sell securities but is rather a paid advertisement provided for information purposes only and shouldn't be used as basis for any investment decision. MP isn't an investment advisor and this report isn't investment advice. MP has been granted 350,000 shares of Positron by Levy & Boonshoft, a third party non-affiliate, for preparation and distribution of this report and other advertising services over a ninety day period. MP may sell said shares without restriction and without further notice. MP intends to sell said shares within 3 months and may sell at anytime prior to, during, or after distribution of information regarding Positron. This constitutes a conflict of interest as to MP's ability to remain objective in its communication regarding the subject company.

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          Shannon Squyres, Editor
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