# \#changetracker

**URL:** https://discourse.slicer.org/tag/changetracker/19.md

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## [Tracking tumors growth/ shrinkage in Slicer 3D](https://discourse.slicer.org/t/tracking-tumors-growth-shrinkage-in-slicer-3d/11312)

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**Author:** [@emipaw](https://discourse.slicer.org/u/emipaw)\
**Replies:** 2\
**Last updated:** [May 12, 2020, 8:41pm UTC](https://discourse.slicer.org/t/tracking-tumors-growth-shrinkage-in-slicer-3d/11312 "2020-05-12T20:41:45Z")

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Hi, I want to compare liver tumors growth and shrinkage - I read that there is a special extension for this purpose - ChangeTracker, but I also read that it is dedicated specifically for meningioma growth analysis. And …

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## [ChangeTracker is broken](https://discourse.slicer.org/t/changetracker-is-broken/253)

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**Author:** [@finetjul](https://discourse.slicer.org/u/finetjul)\
**Replies:** 5\
**Last updated:** [May 3, 2017, 7:23pm UTC](https://discourse.slicer.org/t/changetracker-is-broken/253 "2017-05-03T19:23:56Z")

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Hi, I tested the ChangeTracker extension in Slicer 4.6.2 and it appears to be broken. Problem #1: Test data fails to be loaded Problem #2: There are Python errors at step 3