# Bundle segmentations ok, but TOM trackings absent

**URL:** <https://community.mrtrix.org/t/bundle-segmentations-ok-but-tom-trackings-absent/6212>\
**Category:** Uncategorized\
**Created:** [November 16, 2022, 10:40pm UTC](https://community.mrtrix.org/t/bundle-segmentations-ok-but-tom-trackings-absent/6212 "2022-11-16T22:40:53Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![DominikaS](https://community.mrtrix.org/user_avatar/community.mrtrix.org/dominikas/32/4073_2.png) [@DominikaS](https://community.mrtrix.org/u/DominikaS)\
**Post date:** [November 16, 2022, 10:40pm UTC](https://community.mrtrix.org/t/bundle-segmentations-ok-but-tom-trackings-absent/6212/1 "2022-11-16T22:40:53Z")

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Hi all,

I was running TractSeg on a clinical subject, and while bundle segmentations outputted binary masks of all tracts, TOM trackings failed to track several tracts outputting no streamlines at all (bilaterally). The binary segmentations of these tracts look ok. The ending segmentations as well (although the end mask of the AF in the left hemisphere only, for example, is missing).  
Has anybody come across such a problem before?

Thank you for any suggestions,  
Dominika

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**Author:** ![smeisler](https://community.mrtrix.org/user_avatar/community.mrtrix.org/smeisler/32/3620_2.png) [@smeisler](https://community.mrtrix.org/u/smeisler)\
**Post date:** [November 16, 2022, 11:18pm UTC](https://community.mrtrix.org/t/bundle-segmentations-ok-but-tom-trackings-absent/6212/2 "2022-11-16T23:18:07Z")

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Hi,

You might want to post this on the TractSeg github issues page ([Issues · MIC-DKFZ/TractSeg · GitHub](https://github.com/MIC-DKFZ/TractSeg/issues)) along with all relevant information (e.g., tractseg version, commands, nature of data and preprocessing).

Best,  
Steven

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**Author:** ![H.A.N.K](https://community.mrtrix.org/user_avatar/community.mrtrix.org/h.a.n.k/32/4793_2.png) [@H.A.N.K](https://community.mrtrix.org/u/H.A.N.K)\
**Post date:** [January 16, 2025, 1:58am UTC](https://community.mrtrix.org/t/bundle-segmentations-ok-but-tom-trackings-absent/6212/3 "2025-01-16T01:58:41Z")

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Hi,

I am running into the same problem, were you able to find a solution?