PACS stands for Picture Archiving and Communication System, which is a medical imaging technology used primarily in healthcare organizations to securely store and digitally transmit electronic images and clinically-relevant reports. PACS eliminates the need to manually file and store, retrieve and send sensitive information, films and reports. Instead, medical documentation and images can be securely housed in off-site servers and safely accessed essentially from anywhere in the world using PACS software, workstations and mobile devices. PACS has four major components: hardware imaging machines; a secure network for the distribution and exchange of patient images; a workstation or mobile device for viewing, processing and interpreting images; and electronic archives for storing and retrieving images and related documentation and reports. PACS is used to store, retrieve, present and share images produced by various medical hardware modalities, such as from an X-ray, computed tomography (CT) scan, magnetic resonance imaging (MRI) and ultrasound machines. PACS allows healthcare professionals to access medical images from different physical locations, which means tests can be performed at virtually any medical facility and the results will be available to healthcare providers at any place, any time. This inter-facility communication greatly improves diagnosis speeds, therefore improving the overall quality of patient care. Some of the benefits of using PACS are increased integration between departments and facilities, increased productivity, remote image viewing, instant image viewing, reduced costs, more efficient diagnoses, support for many medical image types, improved patient care, high-quality, durable images, and ready access to high-quality images for medical students.