Introduction
Typically a PACS network consists of a central PACS server which stores a database containing the images, and of multiple clients that can retrieve and display these images on medical imaging software. The images are stored in DICOM format. The modalities (MRI, CT, PET, Ultrasounds, ...) send the images to the PACS Server by using a DICOM "push" (DICOM C-Store). The server and the clients communicates by using the DICOM protocol (DICOM C-Store or Query & Retrieve). The clients display the images by using a medical imaging software: a DICOM viewer.