Hi Martin,
Thanks for the reference. However, I haven't been able to find in that
paper any reference to eddy current producing image rotations. Am I missing
something?
Thanks again,
-Pablo
On Fri, 29 Jan 2010 18:21:31 +0100, Martin Kavec <[log in to unmask]> wrote:
>Hi Pablo,
>
>P. Jezzard, A. S. Barnett, C. Pierpaoli, Characterization of and correction
>for eddy current artifacts in echo planar diffusion imaging., Magn
>Reson Med 39 (5) (1998) 801–812.
>
>cheers,
>
>Martin
>
>On Friday 29 January 2010 16:59:14 Pablo Velasco wrote:
>> Hi Martin,
>>
>> Which P. Jezzard publication?
>> Thanks,
>>
>> -Pablo
>>
>> On Thu, 28 Jan 2010 14:43:09 +0100, Martin Kavec <[log in to unmask]>
>wrote:
>> >Hi Ed,
>> >
>> >you should be careful whether you want to use the b rotation or not. The
>> > fact is that in simplified situation eddy-currents can cause the image
>> > rotation as well (see publication of P. Jezzard). That is why you can not
>> > be sure if the the source of rotation is eddy-currents or the true
>> > subject motion. Rotation of the bvec in the former case would not be a
>> > good idea and would bias your results.
>> >
>> >Best,
>> >
>> >Martin
|