Hi,
I have no answeer for your question, but you might be interested to ask in
the Philips MR list. It's a fairly new one. The link is:
http://lists.liu.se/mailman/listinfo.cgi/pmr-users-mail
Good luck,
Diana
S. Groppa dijo:
> Thanks a lot!
>
> What I found out is that in the par file there are 2 parameters for
> angulation and it should be somehow possible to use these and the
> original phillips directions to get the final bvecs...
>
> but it is not writen somewhere, or I can not find it...
> but thanks a lot for your help.
>
> I'll post a solution if I find smth reasonable.
>
> best wishes
>
> Sergiu
>
>
>> HI Sergiu,
>
>> I'm afraid I don't know about this. I shall forward your email to
>> the Physicist I worked with, and see if he knows. You could try
>> sending a question about Phillips scans and bvecs to the list...I
>> think there's a few people using this make of scanner and FSL, so
>> someone must know the answer.
>
>> There was a long thread about Phillips scans in the archives. I
>> don't know what it was about, so it may or may not be helpful.
>
>> The normalisation is recommended by FSL for all bvecs. It ensures
>> that each direction in the bvecs has a magnitude of 1. There's an
>> equation in the FDT section of the FAQs.
>
>> Good luck with this, I'll follow your emails with interest.
>> Suzanna
>
>> On 29 Feb 2008, at 06:51, S. Groppa wrote:
>
>>> Dear Suzanna,
>>> Thanks a lot for your answer.
>>>
>>> you are right .par .rec is this philips intern format. And that's true
>>> that actually you can get the bvecs from the scanner but because of
>>> the angulation(I
>>> hope that's the right word) the values are always slightly different
>>> (as I understood just re-calculated in the patients plain).
>>>
>>> In some later versions of the par the values of the bvecs are in it,
>>> in mine not...
>>>
>>> ok what about normalization of bvecs, is it alway needed? What for? Or
>>> ist only a par/rec thing.
>>>
>>> I thank you very much!
>>>
>>> Sergiu
>>>
>>> the
>>>> Hi Sergiu,
>>>
>>>> Are you using a Philips scanner for the par/rec files? If so you can
>>>> get the bvecs from the scanner. I don't know if they're encoded in
>>>> the par/rec files. You b values will relate to your images, so if
>>>> you had 32 directions at b=10000 and 2 b=0 images, this forms your
>>>> bvals file (obviously the order needs to match the bvecs). Also, as
>>>> a reminder, don't forget to normalise your bvecs, it tells you how to
>>>> do this in the FAQs on the FSL website.
>>>
>>>> Suzanna
>>>
>>>
>>>> On 28 Feb 2008, at 18:13, S. Groppa wrote:
>>>
>>>>> Dear list,
>>>>>
>>>>> I apologize for this in a way repeated question but I did't find in
>>>>> the list a complete answer for it.
>>>>>
>>>>> I've just got some *.par *.rec 's data - and tried to convert it to
>>>>> fsl_nifti
>>>>> which functioned quite good (through dcm2nii) - but
>>>>>
>>>>> without getting the bvals and bvec??
>>>>>
>>>>> with the error message par 4.1 not yet fully supported.
>>>>>
>>>>> I tried r2agui with no success.
>>>>> Any other ideas of becoming the bvals and bvecs?
>>>>>
>>>>> thanks a lot and sorry for this never ending story.
>>>>>
>>>>> best wishes
>>>>>
>>>>> Sergiu
>>>
>>>
>>>
>>> --
>>> Mit freundlichen Grüßen
>>> S. Groppa
>>> mailto:[log in to unmask]
>
>
>
> --
> Mit freundlichen Grüßen
> S. Groppa
> mailto:[log in to unmask]
>
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