- This topic has 5 replies, 2 voices, and was last updated 6 years, 9 months ago by Anonymous.
November 23, 2015 at 9:43 am #123
I’m processing DTI with brainsuite, and I’m interested in, if possible, to compute connectivity matrix starting from custom ROI.
Thank you very much
November 26, 2015 at 12:56 am #126
Thank you very much,
I’m going to try in the next days. Since I’m not so skillfull probably I will ask you again some informations if I face problems.
Thank you very much again
December 9, 2015 at 9:20 am #129
I’m trying with your sugestions but I faced some problems.
Probably I have simpler solutions, but I need to send you a screenshot by mail (already sent you) to ask you if my solution is available in brainsuite
November 25, 2015 at 6:22 pm #124AnonymousInactive
Hi Luca, It is possible to compute connectivity matrix from custom ROIs, with assumption that your custom ROIs are in the same space as .bfc.nii.gz file and is saved as a .nii/.nii.gz file. Also note that Brainsuite’s connectivity viewer only shows ROI IDs between 100-999. So, you may need to make sure that all your custom ROI ids lie in this range.
You would need to do few more things to ‘import’ your custom ROIs in BrainSuite. First, make sure that your label file with custom ROIs overlay correctly with bfc file in brainsuite. Then, you have to make a label description xml file, which would contain the information (like name etc) about each custom ROI. This xml file would be equivalent to brainsuite_labeldescription.xml file generated by running SVReg and should follow the same format. Below, I have shown an example of contents of xml file for two ROIs. The “id” field represents the voxel values in the custom label file. You can create this xml file in any text editor like notepad. Note that this xml file should contain description of all ROIs in your custom label file.
<?xml version="1.0" encoding="utf-8" ?> <labelset> <label id="196" tag="" color="0xff0000" fullname="My ROI 196"/> <label id="122" tag="" color="0x0000ff" fullname="My ROI 122"/> </labelset>
Now, you can load diffusion data along with bfc file by dragging and dropping the appropriate .bst file (generated by BDP) in Brainsuite. Then, open painter tool (Tools menu > Painter tool) to load custom ROI label and custom xml file. Load the custom label file by clicking the button with ‘open folder’ icon. Load the xml file you created by clicking on ‘Load Desc.’ button. At this point, you should be able to run tractography followed by connectivity computation in diffusion toolbox and your ROIs should showup on the circle plot.
December 22, 2015 at 2:00 pm #152
Is it possible also to compute matrix connectivity from ROI obtained with tool available in brainsuite track filtering? For me it is really usefull since I m performing DTI from stimulation point and sphere done with track filtering reproduce exactly tip of stimulator.
December 29, 2015 at 9:05 am #155AnonymousInactive
Hi Luca, This is one of the feature which we are trying to include in upcoming releases in 2016. As of now, it not directly possible to do it inside the GUI.
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