Hi,

I guess the list cannot really solve this.

You need to know the bvecs + bvals for your sequence and convert the data into a multi-volume 4D-analyze file with, for example, the b0 volume coming first, then the volume with the first non-zero bval corresponding to the second bvecs entry, then the volume with the second non-zero bval corresponding to the third bvecs entry etc., for example. If you do have the uniformly scaled 3D volumes you can simply use avwmerge to create the 4D file. However, you need to find out the bvecs + bvals and perfom the conversion yourself. MRIcro comes with usefuls links on image conversions tools.

Hope this helps at least a bit.

Cheers-

Andreas



	-----Ursprüngliche Nachricht----- 

	Von: Tovar Moll, Fernanda (NIH/NINDS) [mailto:[log in to unmask]] 

	Gesendet: Do 16.12.2004 17:30 

	An: [log in to unmask] 

	Cc: 

	Betreff: Re: [FSL] FDT new user

	

	



	Thaks Tim for your quick reply.

	The problem is that I don't know what I have to do . I have to have a

	directory with the Bo and    another one with the with b0 and the DWIs and

	other with tthe only the DwIs. Where I  have to out the information about

	the gardient table? Or I don't have to inform that. I am sorry but I worked

	with DTI before but I never used FSL or with analyze. I could't find these

	informtion in the webpage.

	Thanks a lot for your help

	fernanda

	-----Original Message-----

	From: Tim Behrens

	To: [log in to unmask]

	Sent: 12/16/2004 11:02 AM

	Subject: Re: [FSL] FDT new user

	

	Hi - thue FDT web pages have all this information -

	

	http://www.fmrib.ox.ac.uk/fsl/fdt/index.html

	

	Hope this is helpful

	

	Cheers

	Tim

	

	

	

	On Thu, 16 Dec 2004, Fernanda Tovar-Moll wrote:

	

	> HI all,

	> I am a new user. Actually I just start to try to process my DTI data

	with FDT.

	> I have data from a 3T GE machine (DICOM format with 33 directions,

	organized

	> by slices, starting with the B0). I converted the data to analyze

	format but

	> I dont know how the data has to be organized in trems of directories.

	All my

	> data is in one only directory in analyze.

	> Can you help me or give me any web page where I can find the

	information

	> about how to organize the data to usecthe FDT sofware.

	> I am sorry for such a basic question.

	> Thanks a lot

	> Fernanda

	>

	

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	Centre for Functional MRI of the Brain

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