Hi,
If you get your dataset from the scanner in DICOM format, you can use standard tools like dcm2nii to get the data in NIFTI and bvals, bvecs as well.
Cheers,
Stam
On 20 Sep 2011, at 10:12, Alessandra Carla' wrote:
> Hi,
> i'm newbie in tbss fsl.
> I'm use a DTI data from Philips 3T and i have this .dpf:
> *** DTI_try parameter data file ***
> //-------------------------------------------------------------------------
> // Rules for this file
> // 1. Parameters are enclosed in the "Begin:..End:" block;
> // 2. Parameters are preceding with case-sensitive keywords like
> "ImageWidth" and so on;
> // 3. Comments are begin with "//"
> // 4. "DWI_Sequence" and "Gradient_Table" are very important parameters,
> // 4.1. "DWI_Sequence" must be defined before the "Gradient_Table";
> // 4.2. Gradient_Table is enclosed in the "Begin/End_Of_Gradient_Table"
> block;
> // 4.3. Gradient [0,0,0] means B0 image (without diffusion gradient);
> // 4.4. Gradient [1,1,1] means this is an average image;
> //-------------------------------------------------------------------------
> Begin:
> ImageWidth: 128
> ImageHeight: 128
> ImageSlices: 55
>
> ProcSliceStart: 0
> ProcSliceEnd: 54
>
> //PixelSize(X): 0.75
> //PixelSize(Y): 0.75
>
> FieldOfView(X): 230
> FieldOfView(Y): 138
> SliceThickness: 2.30
>
> B-Value: 1000
>
> Begin_Of_Gradient_Table:
> 0: 0, 0, 0
> 1: 0.247706555401, -0.559968959080, 0.790617623936
> 2: 0.710320420361, -0.664304733237, -0.232688894916
> 3: -0.202743162345, 0.848308378540, -0.489150391006
> 4: 0.896147198157, 0.359712994442, -0.259859117340
> 5: -0.683364437138, 0.715577231775, -0.144783532974
> 6: 0.510495381947, 0.169363902724, -0.843036377308
> 7: -0.023723465642, -0.056167961646, 0.998139447804
> 8: 0.841728809657, -0.166949509858, -0.513439842778
> 9: -0.616089048182, -0.189148329736, -0.764628794951
> 10: -0.046285641092, -0.142824355660, -0.988665182384
> 11: 0.618474347090, 0.782483718722, 0.072171406570
> 12: 0.252541177581, 0.778878793037, 0.574082554501
> 13: -0.362902424837, 0.858298798741, 0.362801601604
> 14: 0.440599329793, 0.720747960296, -0.535158488968
> 15: -0.401482718696, -0.898701176703, -0.176487454458
> 16: 0.195336615651, -0.944295311476, -0.264858398603
> 17: 0.375177324963, -0.525178301975, -0.763825717011
> 18: 0.712307989245, -0.213887172304, 0.668483063346
> 19: -0.029720950138, -0.940808228303, 0.337633740436
> 20: -0.811651924370, 0.434708568279, 0.390191766099
> 21: -0.950711574920, -0.154746887521, 0.268702255510
> 22: -0.833054158246, -0.467964780839, -0.295008022474
> 23: -0.955559657092, 0.159227489999, -0.248097456994
> 24: -0.258661620074, 0.491091148171, 0.831819481912
> 25: 0.845683158198, 0.347522815144, 0.405028256908
> 26: -0.233225980227, -0.675545681533, -0.699459558737
> 27: -0.672215750268, -0.676212292018, 0.301434771078
> 28: -0.026965898658, 0.441743627906, -0.896735974250
> 29: -0.600119151834, 0.390288680868, -0.698234737885
> 30: 0.422147044025, 0.293020736113, 0.857864046005
> 31: 0.576576794805, -0.751583390200, 0.320439709256
> 32: 0.072782753148, 0.997259605025, -0.013264653406
> 33: 0.973546970181, -0.197178148703, 0.115442949225
> 34: -0.630258959503, -0.012020347267, 0.776291926544
> 35: -0.353175623936, -0.550566647472, 0.756401576776
>
>
> End_Of_Gradient_Table:
>
> how i have to write bvecs and bvals?which format i have to use?
>
> Thank you.
> Bye
>
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