# .vol file not loading

**URL:** <https://discourse.slicer.org/t/vol-file-not-loading/25282>\
**Category:** Support\
**Created:** [September 15, 2022, 7:20pm UTC](https://discourse.slicer.org/t/vol-file-not-loading/25282 "2022-09-15T19:20:00Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![rbaheti](https://avatars.discourse-cdn.com/v4/letter/r/b9bd4f/32.png) [@rbaheti](https://discourse.slicer.org/u/rbaheti)\
**Post date:** [September 15, 2022, 7:20pm UTC](https://discourse.slicer.org/t/vol-file-not-loading/25282/1 "2022-09-15T19:20:00Z")

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Hi,  
I’m trying to upload an ultrasound with a .vol extension. I don’t have more information like which machine was used to create the ultrasound or the software version used by the machine. When I load the scan it shows me the option to load it as a volume and then an error comes up.

![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/b/dbbdccfa08560369ebd323af07b430e28c8c863f.png)

The file doesn’t load as a GE/Kretz volume image. I’m not sure how to convert it into another format (like .mha or .nrrd). I’m also checking out other packages and softwares like TomoVision but no fruitful result so far.

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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:** [September 15, 2022, 8:26pm UTC](https://discourse.slicer.org/t/vol-file-not-loading/25282/2 "2022-09-15T20:26:15Z")

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`.vol` could mean anything since people may use it for arbitrary data formats.

If it happens to be an uncompressed volume then this might work:

> [@New extension: RawImageGuess - for loading of images from unrecognized file format](https://discourse.slicer.org/t/new-extension-rawimageguess-for-loading-of-images-from-unrecognized-file-format/9219):
>
> There are proprietary image file formats the 3D Slicer does not recognize and so refuses to load. @nagy.attila in collaboration with Slicer core developers created an extension that can be used to load data from files that use an unknown format. [RawImageGuess extension](https://github.com/acetylsalicyl/SlicerRawImageGuess) offers a number of parameters (image header size, dimensions, pixel type, etc.) that users can adjust and see the resulting image in real-time. This makes it possible to guess the image format in a couple of minutes. See a demo …

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<div class="post-metadata">

**Author:** ![rbaheti](https://avatars.discourse-cdn.com/v4/letter/r/b9bd4f/32.png) [@rbaheti](https://discourse.slicer.org/u/rbaheti)\
**Post date:** [September 15, 2022, 10:55pm UTC](https://discourse.slicer.org/t/vol-file-not-loading/25282/3 "2022-09-15T22:55:17Z")

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I tried using RawImageGuess but it did gave a very weird output.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/6/e68a26c1904d7dec322cf52659ccacd64ba454da.jpeg)

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<div class="post-metadata">

**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:** [September 15, 2022, 11:12pm UTC](https://discourse.slicer.org/t/vol-file-not-loading/25282/4 "2022-09-15T23:12:43Z")

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It looks like there might be an uncompressed image there (indicate by the diagonal patterns). You can try adjusting the guess parameters to see if you can get something workable.

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<div class="post-metadata">

**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 16, 2022, 4:06am UTC](https://discourse.slicer.org/t/vol-file-not-loading/25282/5 "2022-09-16T04:06:03Z")

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You can enable detailed logging of DICOM loading by in menu → Edit / Application Settings / DICOM / Detailed logging → check. After this, click Examine and check the content of the application log.