The PET ECAT HR scanner is capable of obtaining image resolution of 4.5 mm (FWHM) in the transaxial and axial directions.  The crystal geometry of this scanner ranks it as one of the best among commercial PET systems with regards to its suitability for high resolution organ imaging. The system is equipped with the ability to allow for imaging in both 2D and 3D modes. It able to transmission measurements that can be acquired post-injection for improved emission/transmission image alignment. The scanner is capable of performing dynamic image acquisition at a maximum rate of 1 image frame every 2 seconds. Cardiac and respiratory rate gated studies are also possible on this system. The image reconstruction console is equipped with the latest acquisition and processing tools.