0.9.7#

pydicom 0.9.7 resolves some remaining bugs before moving to Python 3 compatibility. ** It is the last version which will run with Python < 2.6 ** (it will run with Python 2.4 to Python 2.7)

Major changes#

  • Added DICOM 2011 keywords. Old “named tags” still work, but will be deprecated in future versions. Most names are identical, but some have changed. For example:

    • SamplesperPixel becomes SamplesPerPixel (capital ‘P’ on ‘Per’)

    • Beams becomes BeamSequence (and similar for all sequences)

    • Decimal and integer strings handled much better (revisions 4ed698a7bfbe and c313d2befb08).

    • New classes for VR of types DS and IS (DS is derived from Python Decimal)

    • New MultiValue class, enforcing all values of same type

    • New config.py file with user-definable parameters:

    • allow_DS_float (default False) for controlling whether float values can be used to construct DS or IS strings.

    • enforce_valid_values (default True) for ensuring IS, DS meet DICOM standard limits To change these, use ‘import dicom.config, then dicom.config.<parameter>={True|False}’ before setting values of data elements

Users are encouraged to switch to the official DICOM keywords, as these are now part of the standard, and promote consistency across programming languages and libraries.

Bug fixes#

  • New way to read file meta information, not using the group length, instead reading until end of group 2 data elements. If group length dose not match, log a warning (revision b6b3658f3b14).

  • Fix bug in copying raw private data elements (issue 98)

  • Force logging level to warning on ‘import dicom’ (issue 102)

  • Deferred read fixed to work with gzipped files (issue 103)

  • Setting individual items in a DS or IS list now saves to file correctly

  • Japanese and Korean encoding fixes (issue 110)

Other Enhancements#

  • New Sequence class which verifies items are Datasets (issue 52)

  • Assignment to SQ data element checks value is a Sequence or can be converted to one (issue 111)

  • dir(ds) now includes methods and properties as well as DICOM named tags. Work only on Python >= 2.6 as previous versions do not call __dir__ method (issue 95)

  • Added much more debugging info and simplified reading of data elements (revision b6b3658f3b14)

  • updated example files to DICOM 2011 keywords; fixed bugs

Many of the bug fixes/enhancements were submitted by users. Many thanks to those who contributed.