# How to load .3ddose file with SlicerRT extensions

**URL:** <https://discourse.slicer.org/t/how-to-load-3ddose-file-with-slicerrt-extensions/36621>\
**Category:** Support\
**Tags:** dicom, slicerrt\
**Created:** [June 6, 2024, 12:32pm UTC](https://discourse.slicer.org/t/how-to-load-3ddose-file-with-slicerrt-extensions/36621 "2024-06-06T12:32:09Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![cpinter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cpinter/32/7995_2.png) [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Post date:** [June 7, 2024, 9:16am UTC](https://discourse.slicer.org/t/how-to-load-3ddose-file-with-slicerrt-extensions/36621/4 "2024-06-07T09:16:57Z")

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Because we fixed it in January when other people had the same problem:

> [@Unable to open vff file](https://discourse.slicer.org/t/unable-to-open-vff-file/34265):
>
> I have Slicer 5.6.1, but I’m unable to open the vff file despite having the SlicerRT extension installed. The following is the error log: LoadVffFile: The values for the origin must each be greater than or equal to 0. LoadVffFile: Incorrect parameters or required parameters that were not set, vff file failed to load. The required parameters are: rank, type, format, bits, bands, size, spacing, origin, rawsize, data scale, data offset, and title. Warning: In vtkSlicerVffFileReaderLogic.cxx, lin…

> <https://github.com/SlicerRt/SlicerRT/commit/3fb93b870bf8f12cfb2b2e0062534e4045468253>
>
> Re #241

It’s always a good idea to search the forum first.

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