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

[Manuela Kamsu]

In 16 th diffusion gradient may be the number are false 100 100 100 instead of 1 1 1 ?
Manuela ?

Envoyé de mon iPhone

Le Jul 4, 2013 à 1:28 PM, 罗璐娇 <lujiaoluo1990 at 126.com> a écrit :

> 
> Yes, with one b0 image.
> 
> 
> 在 2013-07-04 19:26:14，"Manuela Kamsu" <manuelakamsu at live.fr> 写道：
> 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!
>>> 
>>> 
>>> 
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