Picture Archiving and Communication Systems (PACS) are computers or networks dedicated to the storage (e.g. servers), retrieval, distribution and presentation of images. The medical images are stored in an independent format. The most common format or transmission protocol for image storage is DICOM (Digital Imaging and Communications in Medicine). PACS future began when the radiology department wanted to go to a “filmless” environment and away from film processing. The key fundamental components in the PACS are: Most image are stored in a DICOM format.