This document describes a research PACS system developed by Evorad Medical Information Systems and researchers at the University of Crete. The system allows end-users like researchers and radiologists to develop their own image processing techniques within the PACS using Java or Matlab. It has advanced viewing capabilities, integration with RIS and HIS, and allows for collaboration between remote researchers through image and data synchronization over the internet. The system reduces the time needed for researchers to develop and validate new image processing techniques.