Thank you for the answer. But I still confuse to convert the data.
Does this mean is it 'not okay' to convert the anisotropic data to the isotropic?
Then should I analyze the original one?
2012년 5월 4일 금요일에 Bruce Fischl<fischl@nmr.mgh.harvard.edu>님이 작성:
> Hi EK
>
> it's an empirical question. That is *very* anisotropic, so I suspect that there will be unavoidable biases in things like thickness maps which will be more accurate in regions in which the folds happen to place the cortex in the high resolution plane. That said, if the CNR is good enough it will probably generate reasonable surfaces.
>
> cheers
> Bruce
> On Fri, 4 May 2012, EK Kim wrote:
>
>> Dear freesurfers,
>>
>> I wondered is it okay to analyze isotropic data which was converted to the
>> anisotropic one.
>>
>> The original data has (0.390625, 0.390625, 1.5) mm size and (512, 512, 104)
>> voxels.
>> It obtained from 3T scanner.
>>
>> I know the Freesurfer recommend isotropic data (1,1,1)mm.
>> Does it have any problem to use the data I just transformed?
>>
>> To do this, I rescaled the images and did bilinear interpolation to create
>> an isotropic 8-bit version of images.
>>
>>
>> Thanks for any help.
>>
>> EK
>>
>>
>>
>
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