# Slice Intersection Thickness

**URL:** <https://discourse.slicer.org/t/slice-intersection-thickness/18932>\
**Category:** Support\
**Created:** [July 26, 2021, 7:34pm UTC](https://discourse.slicer.org/t/slice-intersection-thickness/18932 "2021-07-26T19:34:28Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jasmine-lou](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jasmine-lou/32/11369_2.png) [@jasmine-lou](https://discourse.slicer.org/u/jasmine-lou)\
**Post date:** [July 26, 2021, 7:34pm UTC](https://discourse.slicer.org/t/slice-intersection-thickness/18932/1 "2021-07-26T19:34:28Z")

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Hi everyone!

Is there any way that I could increase the slice intersection thickness? Right now I have the default red, green, and yellow crosshairs on my CTs but they appear very thin and can be hard to see. Can those crosshairs be manually edited to be more thick? Thanks!

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**Author:** ![jamesobutler](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jamesobutler/32/7511_2.png) [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Post date:** [July 26, 2021, 8:33pm UTC](https://discourse.slicer.org/t/slice-intersection-thickness/18932/2 "2021-07-26T20:33:29Z")

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I’m assuming you may be using a higher DPI display such as a 4K or an Apple retina display.

@lassoan indicated that this could be edited with some simple coding.

> [@How to make slice intersection line thicker and change their color?](https://discourse.slicer.org/t/how-to-make-slice-intersection-line-thicker-and-change-their-color/17740/2):
>
> There is no GUI for this, but Slice node is a model node and you can modify the line thickness in its display node.

@lassoan Could you provide a python example to change the slice intersection thickness? I can’t seem to get a display node object from a vtkMRMLSliceNode in python.

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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:** [July 26, 2021, 9:24pm UTC](https://discourse.slicer.org/t/slice-intersection-thickness/18932/3 "2021-07-26T21:24:04Z")

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You need to dig into how to get the slice display nodes, but in most cases this for example will set the red slice intersection thickness to 5 points:

```python
getNode('vtkMRMLModelDisplayNode1').SetLineWidth(5)

```