HOUSTON--(BUSINESS WIRE)--May 23, 2006--Positron Corporation (OTCBB:POSC - News) President Joseph Oliverio, a guest speaker at the XL National Congress of Nuclear Medicine symposium held in Queretaro, Mexico, formally announces the distributorship agreement with Mayerick Corporation and Positron for its full PET product line. Mayerick Corporation is a leading medical products distributor throughout Mexico and Latin America for more than two decades whose clients include many of the largest private and public hospitals in the region.