This document summarizes a market research report about Picture Archiving and Communication Systems (PACS). It describes how medical imaging has transitioned from analog films to digital files. PACS systems were developed for digital image display, storage, and sharing. The report analyzes the different market segments for PACS, which allow viewing and sharing medical images from modalities like MRI, CT, ultrasound, and more. PACS penetration in the US healthcare system is almost 90%. The report provides information on PACS network configurations and interactions with radiology information systems.