DICOM is managed by the Medical Imaging & Technology Alliance - a division of NEMA
DICOM Part 1: Introduction and Overview
DICOM Part 2: Conformance
DICOM Part 3: Information Object Definitions
DICOM Part 4: Service Class Specifications
DICOM Part 5: Data Structures and Encoding
DICOM Part 6: Data Dictionary
DICOM Part 7: Message Exchange
DICOM Part 8: Network Communication Support for Message Exchange
DICOM Part 10: Media Storage and File Format for Media Interchange
DICOM Part 11: Media Storage Application Profiles
DICOM Part 12: Media Formats and Physical Media for Media Interchange
DICOM Part 14: Grayscale Standard Display Function
DICOM Part 15: Security and System Management Profiles
DICOM Part 16: Content Mapping Resource
DICOM Part 17: Explanatory Information
DICOM Part 18: Web Services
DICOM Part 19: Application Hosting
DICOM Part 20: Imaging Reports using HL7 Clinical Document Architecture