[Mristudio-users] ask for help on Philips AcHieva 1.5 T scanner gradient table

[Manuela Kamsu]

Was your acquisition performed with 16 gradient directions 

Envoyé de mon iPhone

Le Jul 4, 2013 à 12:56 PM, Asrın NALBANT <analbant at medipol.edu.tr> a écrit :

> Hello, i am new user i dont know very well this programme 
> so i cant help you.
> 
> 04 Tem 2013 08:25 tarihinde "罗璐娇" <lujiaoluo1990 at 126.com> yazdı:
>> Hello experts,
>> I was using dti studio to process my diffusion data obtained from Philips AcHieva 1.5 T scanner(medium angular, format: DICOM, in total of 17 images) .
>> 
>> I used the pre-defined gradient table in dti studio listed below, while plus the 16th line to exclude the last average image
>> 0:   0,    0,    0
>> 1:   1.0,  0.0,  0.0
>> 2:   0.0,  1.0,  0.0
>> 3:   0.0,  0.0,  1.0
>> 4:   -0.1789,  -0.1113,  -0.9776
>> 5:   -0.0635,  0.3767,  -0.9242
>> 6:   0.710,  0.0516,  -0.7015
>> 7:   0.6191,  -0.4385,  -0.6515
>> 8:   0.2424,  0.7843,  -0.5710
>> 9:   -0.2589,  -0.6180,  -0.7423
>> 10:   -0.8169,  0.1697,  -0.5513
>> 11:   -0.8438,  0.5261,  -0.1060
>> 12:   -0.2626,  0.9548,  -0.1389
>> 13:   0.0001,  0.9689,  0.2476
>> 14:   0.7453,  0.6663,  0.0242
>> 15:   0.9726,  0.2317,  0.0209
>> 16:    100    100    100
>> 
>> But resulting images were not that fine, and couldn't distinguish the fiber orientations clearly. I tried to use mricron (dcm2niigue.exe) to obtain the bvecs and bvals file. But it also doesn't work. 
>> Would you please tell me how to solve this problem?
>> 
>> Thanks so much!
>> 
>> 
>> 
>> _______________________________________________
>> mristudio-users mailing list
>> mristudio-users at mristudio.org
>> http://lists.mristudio.org/mailman/listinfo/
>> Unsubscribe, send a blank email to: mristudio-users-unsubscribe at mristudio.org
> _______________________________________________
> mristudio-users mailing list
> mristudio-users at mristudio.org
> http://lists.mristudio.org/mailman/listinfo/
> Unsubscribe, send a blank email to: mristudio-users-unsubscribe at mristudio.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.mristudio.org/pipermail/mristudio-users/attachments/20130704/abb1312d/attachment.html