The medical imaging segments are poised for a major new phase of growth fueled by the availability of new technology coming out of the computer and digital information technology segment. Continuous improvements in technology are resulting in a growing number of new imaging tests that combine high levels of accuracy with rapid, easy-to-use product formats. Part of that medical imaging improvement is coming from positron emission tomography (PET). PET is a scanning technique used in combination with small amounts of radio-labeled compounds to visualize the anatomy and function of the brain. The purpose of this TriMark Publications report is to describe the specific market segment of the diagnostics medical imaging market called PET scanning. This sector includes all of the generally accepted imaging activities that are currently used in PET, including equipment for PET, PET/CT, SPECT and the use of radiopharmaceuticals for imaging. It examines these clinical measurement devices and their reagents and supplies as used in hospitals and clinics. It also reviews associated clinical market segments in which PET scanning has taken a prominent role including cancer treatment, cardiology and neurology imaging markets.