Positron Corporation announced that Patrick G. Rooney tendered his resignation as Chairman and Chief Executive Officer, effective immediately. Mr. Rooney will continue to pursue current and future strategic collaborations and expansion opportunities on behalf of the company. Joseph G. Oliverio, a member of the Board of Directors and President of the company, was elected to serve as Chairman of the Board of Directors as Mr. Rooney's replacement effective September 8, 2014.