# Bone Thickness Mapping don't display the thickness

**URL:** https://discourse.slicer.org/t/bone-thickness-mapping-dont-display-the-thickness/17175
**Category:** Support
**Created:** [April 19, 2021, 3:19pm UTC](https://discourse.slicer.org/t/bone-thickness-mapping-dont-display-the-thickness/17175 "2021-04-19T15:19:49Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![Focus](https://avatars.discourse-cdn.com/v4/letter/f/bc79bd/32.png) [@Focus](https://discourse.slicer.org/u/Focus)
#### Post date: [April 19, 2021, 3:19pm UTC](https://discourse.slicer.org/t/bone-thickness-mapping-dont-display-the-thickness/17175/1 "2021-04-19T15:19:49Z")

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Why it didn’t show the thickness of skull? or any guide me how can I measure the bone thickness

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/a/4/a486b5a1dda2ae7b411084032d643d8217df73f9.jpeg)  
like this from the guide in github  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/f/efde674de927869666e8bf6ff820cb7845b3aebd.jpeg)

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### Author: ![timeanddoctor](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/timeanddoctor/32/5839_2.png) [@timeanddoctor](https://discourse.slicer.org/u/timeanddoctor)
#### Post date: [April 20, 2021, 5:19am UTC](https://discourse.slicer.org/t/bone-thickness-mapping-dont-display-the-thickness/17175/2 "2021-04-20T05:19:04Z")

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you can use the module “modelTomodel”

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### Author: ![Focus](https://avatars.discourse-cdn.com/v4/letter/f/bc79bd/32.png) [@Focus](https://discourse.slicer.org/u/Focus)
#### Post date: [April 23, 2021, 12:54pm UTC](https://discourse.slicer.org/t/bone-thickness-mapping-dont-display-the-thickness/17175/3 "2021-04-23T12:54:34Z")

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I don’t know how to use the modelTomodel module. It seem use to compare model and another model. Can you guide me how can I measure skull thickness by using this module. Thank you for your guidance.

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### Author: ![FSK](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/fsk/32/15249_2.png) [@FSK](https://discourse.slicer.org/u/FSK)
#### Post date: [May 9, 2022, 6:23am UTC](https://discourse.slicer.org/t/bone-thickness-mapping-dont-display-the-thickness/17175/4 "2022-05-09T06:23:30Z")

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Hi,I have two questions  
I can only analyze one side of the first bone, how can I do the whole?  
My second question is how can I do a layer-by-layer evaluation? Can you help me how “modelTomodel” works?

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/8/d8372166ddd8058fdba4f9a460f08aeb4a08366b.png)

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### Author: ![lidia](https://avatars.discourse-cdn.com/v4/letter/l/f08c70/32.png) [@lidia](https://discourse.slicer.org/u/lidia)
#### Post date: [June 20, 2023, 5:05pm UTC](https://discourse.slicer.org/t/bone-thickness-mapping-dont-display-the-thickness/17175/5 "2023-06-20T17:05:54Z")

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Hi there,

I apologize for the late response. I believe I can provide a solution to your issue:

In the file C:\Users\Usuario\AppData\Roaming\NA-MIC\Extensions-29402\BoneThicknessMapping\lib\Slicer-4.11\qt-scripted-modules\BoneThicknessMapping.py, please modify line 931 as follows:

Change ‘airCellTable’ to ‘airCellTableNode’

After making this change, please save the file and try running the program again.