KENNEWICK, Wash., Aug. 2, 2007 (PRIME NEWSWIRE) -- Advanced Medical Isotopes Corporation (Pink Sheets:ADMD) has initiated shipments to leading universities and several international hospitals of Oxygen-18, a key ingredient for the production of Fluorine-18. The increasing usage of Fluorine-18 is essential to the expanding utilization of the development of positron emission tomography (PET). The growing usage of PET affords the ability to evaluate the metabolic and functional activity of cells, affording great promise for the diagnosis of many major diseases, including oncologic imaging for a variety of cancers, brain tumors, heart disease and Alzheimers.