[Mristudio-users] Optic radiations

[Jun Yi Wang]

Hi Christian,

After you click on the Statistics button, you can select a parameter and click on the Statistics Profile button to open up the list of values at each slice.  For you case, you can look at the coronal section and select the range of slices you desire.  You can copy/paste your selection into a spreadsheet.

Jun Yi




________________________________
From: Christian Bieck <c.bieck at T-Online.de>
To: mristudio-users at mristudio.org
Sent: Thursday, November 6, 2008 3:13:00 AM
Subject: [Mristudio-users] Optic radiations

This message seems to have bounced due to the attached picture exceeding the size limit, so I uploaded the picture instead.


Hello, 


Thank you very much for the very fast replies. 
I tried using the CUT operations in the Fiber Tab after fiber tracking, but could not achieve any satisfactory results as the CUT operation ended in adding fibers that were not previously there. This may be due to, as Jun Yi Wang wrote, the CUT operation not being able to be combined with other operations (AND, OR, NOT) of which I made heavy use during extracting the optic radiation. 
Basing the application of the AND, OR and NOT operations on the anatomy of the optic radiation as detailed in neuroanatomic publications, I ended up with something along the lines of what you see in the attached picture (http://i202.photobucket.com/albums/aa215/Senalsun/Opticradiationscut.jpg). While there is still *a lot* of fine-tuning to be done, I would like to know if there is a way of getting rid of the part circled in red so that I may only get the FA statistics of the optic radiation circled in green, without any of these posterior fibers getting cut out in the process.

As an alternative way, is it possible to extract the saved Fiber ROIs and FA values as a spreadsheet so I could copy it into Excel or SPSS? My supervisor told me it would be a good idea, if all else fails, to put the Fiber ROI data into a spreadsheet, then only look at the coordinates beyond a certain x, y or z value signifying the fiber tracts in the visual cortex and then look these positions up in the FA values map. 

Again, thank you very much for your time and help. 


Sincerely, 
Christian Bieck


      
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