The tag of a data element consists of an ordered pair of 16-bit values that represent a Group number and an Element number. The tag indicates the type of information stored in the value field of the data element. There are a number of tags that are standard for the DICOM file format. In addition to the standard tags, user-defined tags may also be added.
LEADTOOLS maintains a table (or list) internally of all available tags, standard and user defined. In this documentation the table of available value representations will be referred to as the Data Element Tag Table. Also provided in this documentation is a table of the default values for the standard tags. To see these default values, refer to the Default Data Element Tag Table.
LEADTOOLS provides a number of functions for maneuvering through and modifying the Data Element Tag Table. All functions pertaining to the Data Element Tag Table have the form L_DicomxxxTag.
For maneuvering through the Data Element Tag Table, LEADTOOLS provides the following functions:
To insert new items in the Data Element Tag Table, call L_DicomInsertTag.
To change the name of an item already in the table, call L_DicomSetNameTag.
To determine whether you have a valid pointer to an Data Element Tag item, call L_DicomExistsTag.
To load DICOM elements from a file, call L_DicomLoadXmlTag.
For a list of macros available for use, refer to DICOM Macros.
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