reader backend for dicom

[wyli]

Is your feature request related to a problem? Please describe.
this feature request is for adding basic Dicom support with a pydicom backend in addition to the existing readers (by extending the base class monai.data.ImageReader)

MONAI/monai/data/image_reader.py

Line 45 in af0e0e9

__all__ = ["ImageReader", "ITKReader", "NibabelReader", "NumpyReader", "PILReader", "WSIReader", "NrrdReader"]

note that as references:

• there are deploy operators based on pydicom such as https://github.com/Project-MONAI/monai-deploy-app-sdk/tree/main/monai/deploy/operators
• the current itk backend ignores the some of the tags, but in general the new backend implementation should return a similar data structure: https://colab.research.google.com/drive/14R9RzmaKQn0Ahpxf9OwhW6U7kcH1_MRi
• the new backend will support the reading MONAI Datasets for TCIA #4227

[Nic-Ma]

Hi @yiheng-wang-nv ,

You can refer to the ITKReader for the DICOM features.

Thanks.