This article describes functionalities and specific features of the 'DICOM Network' informational system that provides possibility to collect, process, archive, distribute and visualize data in DICOM format. Article represents all technical and architecture details and proves the benefits for end users to use the system for secure access to DICOM investigations. Provided information about approaches of the system development and implementation at national and international levels. This system can be interesting for medical institutions and their patients, for specialists that are developing and integrating medical imagistic in complex informational systems. In the paper demonstrated how the system can save time and money for beneficiary institutions and increasing the quality of provided services.