# Load Dicom Data Error

**URL:** <https://discourse.slicer.org/t/load-dicom-data-error/1159>\
**Category:** Support\
**Tags:** dicom\
**Created:** [October 2, 2017, 8:21pm UTC](https://discourse.slicer.org/t/load-dicom-data-error/1159 "2017-10-02T20:21:03Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![rclipp](https://avatars.discourse-cdn.com/v4/letter/r/cc9497/32.png) [@rclipp](https://discourse.slicer.org/u/rclipp)\
**Post date:** [October 2, 2017, 8:21pm UTC](https://discourse.slicer.org/t/load-dicom-data-error/1159/1 "2017-10-02T20:21:03Z")

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I am trying to load several different Dicom data sets and getting the error shown in the image. Sometimes, the data seems to load anyway and I can continue. But othertimes I get image shown. I am using the nightly build from 9/30/2017 on a windows 10 machine.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/8/e8c74c54b3099d43d586156f12f6642083c100b0.png)

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/2/a/2a5a099a61f72beafa5f5cd1026bf25c035ab2ee.jpeg)

Thanks for any help!  
Rachel

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [October 2, 2017, 10:31pm UTC](https://discourse.slicer.org/t/load-dicom-data-error/1159/2 "2017-10-02T22:31:36Z")

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Hi Rachel -

Looks like that is an issue in the MultiVolume plugin. On thing to try as a workaround is going into Advanced mode in the DICOM browser (checkbox on lower right) and then unchecking that plugin from the list on the left.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/6/f/6f90756b94644687e7e62081867806b50ae68e1c.png)

HTH,  
Steve

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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:** [October 3, 2017, 3:51am UTC](https://discourse.slicer.org/t/load-dicom-data-error/1159/3 "2017-10-03T03:51:52Z")

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The issue is due to slicer.dicomDatabase.fileValue(file,self.tags[frameTag]) returning ` __TAG_NOT_IN_INSTANCE__ ` value instead of empty value (when a file is not found on disk).

@pieper @fedorov - do you know why this may be happening now?

Pull request with the fix is submitted: [https://github.com/fedorov/MultiVolumeImporter/pull/23](https://github.com/fedorov/MultiVolumeImporter/pull/23)

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [October 3, 2017, 11:40am UTC](https://discourse.slicer.org/t/load-dicom-data-error/1159/4 "2017-10-03T11:40:08Z")

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Yes, @fedorov pointed this out the other day and there’s a fix to the database here:

> <https://github.com/commontk/CTK/pull/750>

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**Author:** ![fedorov](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/fedorov/32/14_2.png) [@fedorov](https://discourse.slicer.org/u/fedorov)\
**Post date:** [October 3, 2017, 3:52pm UTC](https://discourse.slicer.org/t/load-dicom-data-error/1159/5 "2017-10-03T15:52:32Z")

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@lassoan I experienced the same issue in a different context with a different plugin. The issue is not in MultiVolumeImporter plugin, but in the DICOM database code due to that inconsistent return value. But why that is happening, I don’t know. I hope it goes away once the PR above is merged, but let me know if you still want to merge [https://github.com/fedorov/MultiVolumeImporter/pull/23](https://github.com/fedorov/MultiVolumeImporter/pull/23) - it should be harmless.