[Mristudio-users] Mulitiple b-values

[Hangyi Jiang]

hi,

seems that your dataset is from Philips, right?

as we known, the old Philips software (before version 4.xx? i'm not exactly sure) export the DWIs by "slice-by-slice" format, while new versions use "gradient by gradient" format.

regards,

hangyi





>>> "[Seongjin]" <choisj70 at gmail.com> 08/04/08 2:52 PM >>>
What I found while I was trying your recommendation, somehow DTI data
did not work with image sequence option "gradient by gradient".
When I selected the option with "slice-by-slice", I had a good 3D view.
Do you have any recommendation on selecting options on this?

Regards,

Seongjin

On Fri, Aug 1, 2008 at 1:41 PM, Hangyi Jiang <hjiang at jhmi.edu> wrote:

> hi,
>
> you can process the multiple b-values' dataset by defining the gradient
> table in this way:
>
> #: X, Y, Z, b-value
>
> for example, if you have 2 dataset (6 directional DWI), one is acquired
> with b-value=800, another one is 1000; the gradent table might be:
>
> 1: 1, 0, 0, 800
> 2: 0, 1, 0, 800
> 3: 0, 0, 1, 800
> 4: 1, 1, 0, 800
> ......
> 7: 1, 0, 0, 1000
> 8: 0, 1, 0, 1000
> 9: 0, 0, 1, 1000
> 10: 1, 1, 0, 1000
> ....
>
> regards,
>
> hangyi
>
>
>
>
>
>
>
>
> >>> "[Seongjin]" <choisj70 at gmail.com> 08/01/08 12:28 PM >>>
> I have some DTI data have 5 b-values: 0, 250, 500, 750, 1000. (Philips 3T)
> For each b-value, low directional resolution was applied and all the data
> were saved in a single file.
> Is DTI studio capable of handling this data?
> Is there anyone who worked on this types of data?
>
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