Get the MRML ID of the volume being viewed through a python script

Support
1

I want to get the MRML ID of the volume being viewed on the interface through a python script

image
image1110×496 55.4 KB

For example, now I want to get the MRML ID of “20005: Screen Save” through python code, which is ‘vtkMRMLScalarVolumeNode133’
I tried using slicer.app.applicationLogic().GetSelectionNode().GetActiveVolumeID() but the result is not what I want.
If anyone can help me I will be very grateful !!

2

The Data module lets you set all at once, but each slice view can have different data, so you can look up each one individually:

slicer.app.layoutManager().sliceWidget("Red").mrmlSliceCompositeNode().GetBackgroundVolumeID()

(get the list of view names with slicer.app.layoutManager().sliceViewNames())

1 Like
3

Thank you very much !! I successfully got the ID I wanted.
but I would also like to know how you came to know this code. I am an engineering student and am developing a 3D Slicer plug-in.
thanks again for your kindness.

4

I had the advantage that I was one of the authors for that part of the code.

But in general, when I need to figure out how some Slicer code works I follow the method described here:

https://slicer.readthedocs.io/en/latest/developer_guide/python_faq.html#how-to-find-a-python-function-for-any-slicer-features

It also helps to read through the script repository, extensions, and other parts of the code just to learn what’s possible.

3 Likes