# Images went wrong after RT export

**URL:** <https://discourse.slicer.org/t/images-went-wrong-after-rt-export/3054>\
**Category:** Support\
**Created:** [June 3, 2018, 9:21am UTC](https://discourse.slicer.org/t/images-went-wrong-after-rt-export/3054 "2018-06-03T09:21:08Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![mpsdw](https://avatars.discourse-cdn.com/v4/letter/m/c4cdca/32.png) [@mpsdw](https://discourse.slicer.org/u/mpsdw)\
**Post date:** [June 3, 2018, 9:21am UTC](https://discourse.slicer.org/t/images-went-wrong-after-rt-export/3054/1 "2018-06-03T09:21:08Z")

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Operating system:windows  
Slicer version:4.3.1

Dear all：  
I have constructed some segments in T1+contrast images，and PET images were selected as master volume when I exported this structure in RT-export, but after that, PET images become terrible！！I dont know what’s going wrong，Does any body can help me？

Thanks  
Chentao

 ![%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_20180603150450](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/b/eb6df2aa39c9565de26b49e3bb811d4c40948abc.jpeg)

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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 3, 2018, 11:31am UTC](https://discourse.slicer.org/t/images-went-wrong-after-rt-export/3054/2 "2018-06-03T11:31:05Z")

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Please try with latest stable version of Slicer. If you still have issues, then post a screenshot that shows the PET image when it still looks good.

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**Author:** ![mpsdw](https://avatars.discourse-cdn.com/v4/letter/m/c4cdca/32.png) [@mpsdw](https://discourse.slicer.org/u/mpsdw)\
**Post date:** [June 3, 2018, 12:43pm UTC](https://discourse.slicer.org/t/images-went-wrong-after-rt-export/3054/3 "2018-06-03T12:43:47Z")

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Thanks for your reply，but does the SlicerRT extension still works on slicer 4.8.1？ Because it seems some features like [DICOM-RT export] cannot be found in the [All Modules] list. So I don’t know how to conduct the same operation in the latest stable version. Can you teach me how to do or where I can get a manual about this？ Thank you

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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 3, 2018, 9:22pm UTC](https://discourse.slicer.org/t/images-went-wrong-after-rt-export/3054/4 "2018-06-03T21:22:35Z")

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Yes, SlicerRT works well on both latest stable (4.8.1) and latest nightly (4.9.x) versions. See DICOM module documentation about how to export data: [https://www.slicer.org/wiki/Documentation/Nightly/Modules/DICOM](https://www.slicer.org/wiki/Documentation/Nightly/Modules/DICOM)

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**Author:** ![mpsdw](https://avatars.discourse-cdn.com/v4/letter/m/c4cdca/32.png) [@mpsdw](https://discourse.slicer.org/u/mpsdw)\
**Post date:** [June 4, 2018, 9:03am UTC](https://discourse.slicer.org/t/images-went-wrong-after-rt-export/3054/5 "2018-06-04T09:03:22Z")

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Hello，doctor lassoan，sorry to disturb again，I have tried many times according to the DICOM module documentation, conducting segamentation on MR images, making model, and draging the model to the structure of PET，then exporting the study，now PET images can be exported correctly，but why the 【rtss.dcm】 file does not appear.

 ![export%20to%20dicom](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/c/fc377773aa8d22fb5365edb96a3da76b9fad9772.jpeg)

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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 4, 2018, 11:28am UTC](https://discourse.slicer.org/t/images-went-wrong-after-rt-export/3054/6 "2018-06-04T11:28:12Z")

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Structure set (RTSS) can be exported only from segmentation node. If you have your data in a model node then you need to import that into a segmentation node (using Segmentations module).

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**Author:** ![mpsdw](https://avatars.discourse-cdn.com/v4/letter/m/c4cdca/32.png) [@mpsdw](https://discourse.slicer.org/u/mpsdw)\
**Post date:** [June 4, 2018, 11:53am UTC](https://discourse.slicer.org/t/images-went-wrong-after-rt-export/3054/7 "2018-06-04T11:53:13Z")

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Yeah !! It really works ! The problem has been solved finally , and images looked great ! Really thanks for your help !