# Unable to Load DICOM data

**URL:** <https://discourse.slicer.org/t/unable-to-load-dicom-data/13714>\
**Category:** Support\
**Tags:** dicom\
**Created:** [September 26, 2020, 10:27pm UTC](https://discourse.slicer.org/t/unable-to-load-dicom-data/13714 "2020-09-26T22:27:41Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![jax200](https://avatars.discourse-cdn.com/v4/letter/j/5e9695/32.png) [@jax200](https://discourse.slicer.org/u/jax200)\
**Post date:** [September 26, 2020, 10:27pm UTC](https://discourse.slicer.org/t/unable-to-load-dicom-data/13714/1 "2020-09-26T22:27:41Z")

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I’m a new user and trying to follow the tutorial with a 3D Slicer dataset. I am unable to load the DICOM data in that the lower “Load” button remains grayed-out when I select “patient1”. What is more, I have previously loaded data without issue, so this is new. I’ve tried re-installing 3D Slicer 4.10.2 but no luck.

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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:** [September 26, 2020, 10:29pm UTC](https://discourse.slicer.org/t/unable-to-load-dicom-data/13714/2 "2020-09-26T22:29:35Z")

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DICOM loading should work well in latest Slicer Preview Release. If you still experience issues then follow instructions here: [https://www.slicer.org/wiki/Documentation/Nightly/FAQ/DICOM](https://www.slicer.org/wiki/Documentation/Nightly/FAQ/DICOM)

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**Author:** ![jax200](https://avatars.discourse-cdn.com/v4/letter/j/5e9695/32.png) [@jax200](https://discourse.slicer.org/u/jax200)\
**Post date:** [September 26, 2020, 11:49pm UTC](https://discourse.slicer.org/t/unable-to-load-dicom-data/13714/3 "2020-09-26T23:49:10Z")

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Thank you. Only after I selected “Examine” did it properly load. What does that mean?

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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:** [September 27, 2020, 12:07am UTC](https://discourse.slicer.org/t/unable-to-load-dicom-data/13714/4 "2020-09-27T00:07:42Z")

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If you enable “Advanced” mode then clicking “Examine” will provide a list of loading options (as DICOM files can be interpreted different ways and you might not want to use the default one) and then you click “Load” to load all the selected ones into the scene.

If you disable “Advanced” option then the default interpretation is used, so you can directly click “Load” button.

In recent Slicer Preview Releases, you can also just double-click on any patient/study/series in the table to examine/load it, saving a button click.

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**Author:** ![jax200](https://avatars.discourse-cdn.com/v4/letter/j/5e9695/32.png) [@jax200](https://discourse.slicer.org/u/jax200)\
**Post date:** [September 27, 2020, 2:12pm UTC](https://discourse.slicer.org/t/unable-to-load-dicom-data/13714/5 "2020-09-27T14:12:41Z")

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Got it. Thanks for the help.