Medical imaging is a vital part of modern healthcare, as it provides essential information for diagnosis and treatment of various diseases and conditions. However, medical imaging also poses some challenges, such as compatibility, quality, storage, and sharing of the images and related data. To overcome these challenges, a standard protocol called DICOM (Digital Imaging and Communications in Medicine) was developed to enable the capture, storage, and transmission of medical images and data across different devices and systems. A DICOM viewer is a software application that allows users to access, view, and manipulate DICOM files on their devices. In this article, we will explore what DICOM is, how it works, and what are the benefits of using a DICOM viewer.