Hi Stam:
Thank you for your advice! I also thought of that, to use the sum for the normalization. But the waytotal number of the corpus callosum is big, if I add these two numbers and divide the fdt_path by the sum, I will have a very low probability for the entire tract. After using the threshold, I get very few fibres. Could I use the average of these two numbers, as it is the same tract going through the two seeds twice?

Date: Wed, 30 Jun 2010 10:21:43 +0100
From: [log in to unmask]
Subject: Re: [FSL] corpus callosum waytotal
To: [log in to unmask]

Hi Yan,

you are right, you will get two waytotal numbers,  one per specified seed mask. I would add these numbers and use the sum for normalization.


On 30 Jun 2010, at 09:50, LiuYan wrote:

Hi FSL specialists:
Recently, we try to do the tractography for the corpus callosum. Two seed masks are defined either side of the midline in the sagittal images. In the tools box, we choose the multiple masks to get the tract. However, we have two waytotal numbers in the result, and we don't know which one to use for the normalization. Any one who has also worked on the corpus callosum could give us some advice? Many thanks in advance!

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