DCMTK Version 3.6.9 OFFIS DICOM Toolkit

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HISTORY file

    The OFFIS DICOM Toolkit DCMTK

    In 1993, the OFFIS institute and Oldenburg University, Germany supported by
    CERIUM, Rennes, France, developed a DICOM implementation on behalf of
    CEN/TC251/WG4 as part of a DICOM demonstration at RSNA'93.  The software
    started with a early version of the DICOM Upper Layer Protocol facility
    developed by the Mallinckrodt Institute of Radiology in St. Louis, USA.  The
    rest of this software was developed independently and successfully demonstrated
    for the first time at RSNA'93.  Interoperability was demonstrated with around
    20 implementations from vendors of medical imaging equipment, with both this
    software and the Mallinckrodt Institute of Radiology's own implementation.
    This implementation became known as the European CTN (Central Test Node).

    The European CTN software was further extended by OFFIS in 1994 and 1995 and
    used as part of DICOM demonstrations at EuroPACS'94 in Geneva, ECR'95 in Vienna
    and CAR'95 in Berlin where even more vendors of imaging equipment were able to
    demonstrate interoperability.

    During 1996, the software was rewritten by OFFIS to use a new C++ based DICOM
    encoding/decoding library and has been supplemented with a Modality Worklist
    CTN, demonstrated for the first time at CAR'96 in Paris, France.  The CAR'96
    DICOM demonstration featured Modality Worklist Management and Image
    Storage/Query/Retrieval.  The available software includes source code and
    documentation for the worklist management and image storage/query/retrieve
    server applications, a number of test applications, and the necessary
    libraries.  A similar industry demonstration also took place at the European
    Congress of Radiology (ECR '97) in Vienna and at CAR'97 in Berlin.

    Beginning with release 3.0 (1996), the software package was renamed to DCMTK
    (DiCoM ToolKit).  It contains a number of improvements over the "European CTN"
    software previously available from OFFIS/Oldenburg University, the most
    important being:
      - configuration using GNU Autoconf
      - a modality worklist SCP and SCU
      - a new C++ encoding/decoding library
      - support for offline media
      - support for explicit VR transfer syntaxes
      - a user-extensible data dictionary
      - support for all balloted image SOP classes

    In 1997, a tool allowing to create DICOMDIRs according to the "General Purpose
    CD-R Image Interchange Profile" was added.  This tool was used to master the
    CAR' 97 and NEMA '97 DICOM Demonstration CDs.

    Beginning in 1998, new libraries for efficient rendering of DICOM grayscale
    images, display calibration according to DICOM part 14 and an implementation of
    the Grayscale Softcopy Presentation State (GSPS) supplement were added and
    demonstrated at ECR '99 and RSNA InfoRAD '99.  Together with an implementation
    of DICOM basic grayscale print management (SCU and SCP, both supporting
    presentation LUT) and a small GSPS checker these tools were used for testing
    purposes for the "softcopy and hardcopy consistency" part of the IHE
    (Integrating the Healthcare Enterprise), an initiative of RSNA and HIMSS.

    For the RSNA 2000 and the ECR 2001, DICOM's new security extensions on secure
    transport connections (TLS - Transport Layer Security) and Digital Signatures
    were added together with a library for DICOM Structured Reporting.  Furthermore,
    support for color images has been moved to the public part of the toolkit
    (required separate licensing before).

    To be continued ...

    In addition to the freely available DCMTK software, OFFIS has also developed
    other DICOM software which must be licensed separately.  These separate packages
    build on the facilities provided by DCMTK. -- See: http://dicom.offis.de/

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