[Mristudio-users] DTI images from VErio

[Kotikalapudi Raviteja]

Dear Susumu,

I am writing this mail in context with the image orientation problems
encountered while registering DTI to T2.

I would like to know if there is a way to solve this one, as I need to
normalize them further to a template image.

Thank you,
---KRT

On Thu, Aug 16, 2012 at 11:22 PM, susumu mori <susumu at mri.jhu.edu> wrote:

> Hi Judy,
>
> I guess you did 3 signal averaging?
> In Siemens scanners, the signal averaging doesn't really average the data
> and save all scans in separate files. So, you may have 3 repetitions of
> 1+20.
>
> For the table, please try this;
>
> 0:   0, 0, 0
> 1:   1.000000,  0.000000,  0.000000;
> 2:   0.000000,  1.000000,  0.000000;
> 3:  -0.031984,  0.799591,  0.599693;
> 4:   0.856706,  0.493831, -0.148949;
> 5:   0.834429,  0.309159,  0.456234;
> 6:   0.834429, -0.309159,  0.456234;
> 7:   0.856706, -0.493831, -0.148949;
> 8:   0.822228,  0.000000, -0.569158;
> 9:   0.550834,  0.425872, -0.717784 ;
> 10:   0.468173,  0.834308, -0.291108 ;
> 11:  0.515933,  0.808894,  0.281963 ;
> 12:  0.391890,  0.515855,  0.761785 ;
> 13:  0.478151,  0.000000,  0.878278 ;
> 14:  0.391890, -0.515855,  0.761785 ;
> 15:  0.515933, -0.808894,  0.281963 ;
> 16:  0.468173, -0.834308, -0.291108 ;
> 17:  0.550834, -0.425872, -0.717784 ;
> 18:  0.111012, -0.264029, -0.958105 ;
> 19:  0.111012,  0.264029, -0.958105 ;
> 20:  0.031984,  0.799591, -0.599693 ;
>
> On Tue, Aug 7, 2012 at 10:43 AM, Judy James <jjames2 at umc.edu> wrote:
>
>>  Dear members,
>> I have a question about a data set I received from Siemens Verio.
>> The images are in Mosaic form with 63 sets of 28 images in it. The DICOM
>> header says 20 directions with 1 average. I don't understand how it has 63
>> sets of mosaic if it was only 20 directions.
>>
>> Can any one help?
>> I am also on the look out for the 20 direction gradient table used on
>> Verio. Can any one share it?
>>
>> Thanks
>> Judy
>>
>>
>>
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