# Extract/visualise a BLOB file from DICOM (radiotherapy)

**URL:** <https://discourse.slicer.org/t/extract-visualise-a-blob-file-from-dicom-radiotherapy/7124>\
**Category:** Support\
**Tags:** extensions-manager, dicom, slicerrt\
**Created:** [June 11, 2019, 1:15pm UTC](https://discourse.slicer.org/t/extract-visualise-a-blob-file-from-dicom-radiotherapy/7124 "2019-06-11T13:15:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mcamara](https://avatars.discourse-cdn.com/v4/letter/m/ee7513/32.png) [@mcamara](https://discourse.slicer.org/u/mcamara)\
**Post date:** [June 11, 2019, 1:15pm UTC](https://discourse.slicer.org/t/extract-visualise-a-blob-file-from-dicom-radiotherapy/7124/1 "2019-06-11T13:15:33Z")

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Hi there,

I have been using SlicerRT so I can access the delineations (segmentations) of individual organs that have been defined in a RTstruct file (also DICOM format).

There is a structure - an applicator (used for brachytherapy) - that is saved as a BLOB file into a DICOM format RTPlan file.

I was wondering whether anyone has managed to open a BLOB file from a DICOM using slicer?

Thanks in advance!

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [June 11, 2019, 1:46pm UTC](https://discourse.slicer.org/t/extract-visualise-a-blob-file-from-dicom-radiotherapy/7124/2 "2019-06-11T13:46:48Z")

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I don’t think BLOB file is a standard DICOM information object. If you can share an example file then we can have a closer look.