# Problem to import DWI images using Diffusion-weighted DICOM Import (DWIConvert)

**URL:** https://discourse.slicer.org/t/problem-to-import-dwi-images-using-diffusion-weighted-dicom-import-dwiconvert/6999
**Category:** Support
**Created:** [June 3, 2019, 4:16am UTC](https://discourse.slicer.org/t/problem-to-import-dwi-images-using-diffusion-weighted-dicom-import-dwiconvert/6999 "2019-06-03T04:16:19Z")
**Posts on this page:** 4
**Page:** 1

<div class="post-metadata">

### Author: ![shahrokh](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/shahrokh/32/1499_2.png) [@shahrokh](https://discourse.slicer.org/u/shahrokh)
#### Post date: [June 3, 2019, 4:16am UTC](https://discourse.slicer.org/t/problem-to-import-dwi-images-using-diffusion-weighted-dicom-import-dwiconvert/6999/1 "2019-06-03T04:16:20Z")

</div>

Dears 3DSlicer developers:

```
Specification:
Fedora Core 25 (Linux localhost.localdomain 4.8.6-300.fc25.x86_64)
3DSlicer versions 4.8.1
3DSlicer versions 4.9.0
3DSlicer versions 4.10.0

```

I have 1768 DWI images ( **from** ep2d\_\_FOV256\_ISO2mm\_i1.dcm **to** ep2d\_\_FOV256\_ISO2mm\_i1768.dcm), 68 slices per volume and 26 volumes

I want to use “UKF Tractogrpahy” module to analyze these image. To do this and import images, I think that I should use the module of “Diffusion-weighted DICOM Import (DWIConvert)” with the following setup.

 ![ScreenshotDWIConvert](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/2/d256524e68efbd7123a3b18c9bd5d2d5703255d1.png)

When I execute this module, I get the following error message:

> /home/sn/Slicer-4.8.1-linux-amd64/lib/Slicer-4.8/cli-modules/DWIConvert --conversionMode DicomToNrrd --inputDicomDirectory /home/sn/Diffusion --outputNiftiFile /home/sn/Diffusion/test --outputBValues /home/sn/Diffusion/test --outputBVectors /home/sn/Diffusion/test --outputDirectory . --smallGradientThreshold 0.2 --transposeInputBVectors
> 
> Diffusion-weighted DICOM Import (DWIConvert) standard output:
> 
> ======= DWI Convert Public Lib Ctest =========  
> =================== this-\>m\_SlicesPerVolume:68  
> Dicom images are ordered in a volume interleaving way.  
> ImageOrientationPatient (0020:0037): LPS Orientation Matrix  
> 0.999997 3.3575e-08 0.00238174  
> -0.000420449 0.984298 0.176516  
> -0.00234433 -0.176516 0.984295
> 
> this-\>m\_SpacingMatrix  
> 2 0 0  
> 0 2 0  
> 0 0 2
> 
> NRRDSpaceDirection  
> 1.99999 6.71501e-08 0.00476347  
> -0.000840897 1.9686 0.353032  
> -0.00468866 -0.353033 1.96859
> 
> Slice 0: -136.139 -145.778 33.773  
> Slice 1: -136.135 -145.425 35.7416  
> Slice order is IS  
> Image#: 0 BV: 0 GD: 0,0,0  
> Number of Directions : 3  
> Directions 0: 0.86221  
> Directions 1: -0.362712  
> Directions 2: 0.353602  
> DiffusionVector\_magnitude 1  
> Image#: 68 BV: 1000 GD: 0.86220956,-0.36271203,0.35360244  
> Number of Directions : 3  
> Directions 0: 0.863006  
> Directions 1: 0.36176  
> Directions 2: 0.352634  
> DiffusionVector\_magnitude 1  
> Image#: 136 BV: 1000 GD: 0.86300552,0.36176044,0.35263431  
> Number of Directions : 3  
> Directions 0: 0.862383  
> Directions 1: 0.362935  
> Directions 2: -0.352951  
> DiffusionVector\_magnitude 1  
> Image#: 204 BV: 1000 GD: 0.86238289,0.36293468,-0.35295057  
> Number of Directions : 3  
> Directions 0: 0.863359  
> Directions 1: -0.361339  
> Directions 2: -0.352202  
> DiffusionVector\_magnitude 1  
> Image#: 272 BV: 1000 GD: 0.8633585,-0.36133933,-0.35220158  
> Number of Directions : 3  
> Directions 0: 0.357315  
> Directions 1: -0.361901  
> Directions 2: -0.861019  
> DiffusionVector\_magnitude 1  
> Image#: 340 BV: 1000 GD: 0.35731497,-0.3619009,-0.86101902  
> Number of Directions : 3  
> Directions 0: 0.356462  
> Directions 1: -0.865857  
> Directions 2: -0.351035  
> DiffusionVector\_magnitude 1  
> Image#: 408 BV: 1000 GD: 0.35646203,-0.86585736,-0.35103545  
> Number of Directions : 3  
> Directions 0: 0.355873  
> Directions 1: -0.865479  
> Directions 2: 0.352564  
> DiffusionVector\_magnitude 1  
> Image#: 476 BV: 1000 GD: 0.35587266,-0.86547863,0.35256404  
> Number of Directions : 3  
> Directions 0: 0.356936  
> Directions 1: -0.36273  
> Directions 2: 0.860828  
> DiffusionVector\_magnitude 1  
> Image#: 544 BV: 1000 GD: 0.35693565,-0.36272988,0.86082757  
> Number of Directions : 3  
> Directions 0: 0.357965  
> Directions 1: 0.361675  
> Directions 2: 0.860844  
> DiffusionVector\_magnitude 1  
> Image#: 612 BV: 1000 GD: 0.35796461,0.36167514,0.86084408  
> Number of Directions : 3  
> Directions 0: 0.356507  
> Directions 1: 0.865463  
> Directions 2: 0.351961  
> DiffusionVector\_magnitude 1  
> Image#: 680 BV: 1000 GD: 0.35650745,0.8654629,0.35196099  
> Number of Directions : 3  
> Directions 0: 0.35609  
> Directions 1: 0.865654  
> Directions 2: -0.351912  
> DiffusionVector\_magnitude 1  
> Image#: 748 BV: 1000 GD: 0.35609004,0.86565441,-0.35191223  
> Number of Directions : 3  
> Directions 0: 0.357203  
> Directions 1: 0.363002  
> Directions 2: -0.860602  
> DiffusionVector\_magnitude 1  
> Image#: 816 BV: 1000 GD: 0.3572031,0.36300167,-0.86060208  
> Image#: 884 BV: 0 GD: 0,0,0  
> Number of Directions : 3  
> Directions 0: 0.86221  
> Directions 1: -0.362712  
> Directions 2: 0.353602  
> DiffusionVector\_magnitude 1  
> Image#: 952 BV: 1000 GD: 0.86220956,-0.36271203,0.35360244  
> Number of Directions : 3  
> Directions 0: 0.863006  
> Directions 1: 0.36176  
> Directions 2: 0.352634  
> DiffusionVector\_magnitude 1  
> Image#: 1020 BV: 1000 GD: 0.86300552,0.36176044,0.35263431  
> Number of Directions : 3  
> Directions 0: 0.862383  
> Directions 1: 0.362935  
> Directions 2: -0.352951  
> DiffusionVector\_magnitude 1  
> Image#: 1088 BV: 1000 GD: 0.86238289,0.36293468,-0.35295057  
> Number of Directions : 3  
> Directions 0: 0.863359  
> Directions 1: -0.361339  
> Directions 2: -0.352202  
> DiffusionVector\_magnitude 1  
> Image#: 1156 BV: 1000 GD: 0.8633585,-0.36133933,-0.35220158  
> Number of Directions : 3  
> Directions 0: 0.357315  
> Directions 1: -0.361901  
> Directions 2: -0.861019  
> DiffusionVector\_magnitude 1  
> Image#: 1224 BV: 1000 GD: 0.35731497,-0.3619009,-0.86101902  
> Number of Directions : 3  
> Directions 0: 0.356462  
> Directions 1: -0.865857  
> Directions 2: -0.351035  
> DiffusionVector\_magnitude 1  
> Image#: 1292 BV: 1000 GD: 0.35646203,-0.86585736,-0.35103545  
> Number of Directions : 3  
> Directions 0: 0.355873  
> Directions 1: -0.865479  
> Directions 2: 0.352564  
> DiffusionVector\_magnitude 1  
> Image#: 1360 BV: 1000 GD: 0.35587266,-0.86547863,0.35256404  
> Number of Directions : 3  
> Directions 0: 0.356936  
> Directions 1: -0.36273  
> Directions 2: 0.860828  
> DiffusionVector\_magnitude 1  
> Image#: 1428 BV: 1000 GD: 0.35693565,-0.36272988,0.86082757  
> Number of Directions : 3  
> Directions 0: 0.357965  
> Directions 1: 0.361675  
> Directions 2: 0.860844  
> DiffusionVector\_magnitude 1  
> Image#: 1496 BV: 1000 GD: 0.35796461,0.36167514,0.86084408  
> Number of Directions : 3  
> Directions 0: 0.356507  
> Directions 1: 0.865463  
> Directions 2: 0.351961  
> DiffusionVector\_magnitude 1  
> Image#: 1564 BV: 1000 GD: 0.35650745,0.8654629,0.35196099  
> Number of Directions : 3  
> Directions 0: 0.35609  
> Directions 1: 0.865654  
> Directions 2: -0.351912  
> DiffusionVector\_magnitude 1  
> Image#: 1632 BV: 1000 GD: 0.35609004,0.86565441,-0.35191223  
> Number of Directions : 3  
> Directions 0: 0.357203  
> Directions 1: 0.363002  
> Directions 2: -0.860602  
> DiffusionVector\_magnitude 1  
> Image#: 1700 BV: 1000 GD: 0.3572031,0.36300167,-0.86060208
> 
> Diffusion-weighted DICOM Import (DWIConvert) standard error:
> 
> Error: the output file type is not supported currently  
> Error: the output file type is not supported currently  
> Invalidate conversion mode  
> Diffusion-weighted DICOM Import (DWIConvert) completed with errors

I must mention that I get the same error in 3DSlicer versions 4.8.1, 4.9.0 and 4.10.0.  
Please guide me.

Please guide me.  
Thanks a lot.  
Shahrokh

---

<div class="post-metadata">

### Author: ![ljod](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ljod/32/652_2.png) [@ljod](https://discourse.slicer.org/u/ljod)
#### Post date: [June 3, 2019, 11:19am UTC](https://discourse.slicer.org/t/problem-to-import-dwi-images-using-diffusion-weighted-dicom-import-dwiconvert/6999/2 "2019-06-03T11:19:18Z")

</div>

Please use the new release 4.10.2 and the new module dcm2niix GUI. This should load a much more comprehensive set of recent DICOM DWI.

Let us know if this works for you.

---

<div class="post-metadata">

### Author: ![shahrokh](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/shahrokh/32/1499_2.png) [@shahrokh](https://discourse.slicer.org/u/shahrokh)
#### Post date: [June 3, 2019, 1:00pm UTC](https://discourse.slicer.org/t/problem-to-import-dwi-images-using-diffusion-weighted-dicom-import-dwiconvert/6999/3 "2019-06-03T13:00:18Z")

</div>

Dear Lauren

Thank you very very much. This is an excellent version. My problem was solved.  
Best regards.

---

<div class="post-metadata">

### Author: ![ljod](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ljod/32/652_2.png) [@ljod](https://discourse.slicer.org/u/ljod)
#### Post date: [June 3, 2019, 1:55pm UTC](https://discourse.slicer.org/t/problem-to-import-dwi-images-using-diffusion-weighted-dicom-import-dwiconvert/6999/4 "2019-06-03T13:55:03Z")

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Great!! Thanks for letting us know that the new release solves this issue.