Hi Mark,
Thanks for the reply. I would like to register my 2-D image onto the
surface of the brain by knowing several corresponding locations on the
surface of the brain. In Matlab, I found a function cpselect which can
register 2-D image onto another 2-D image using the projective mode. I
am just wondering if flirt can do 2-D to 3-D registration using
spatial markers instead of anatomical features. Thanks.
Best,
Yunjie
On Oct 23, 2008, at 6:16 PM, Mark Jenkinson wrote:
> Hi,
>
> I'm not sure by what you mean when you say "wrap my 2-D image" or
> "project
> a rectangular 2-D images ... onto the surface of a 3-D MRI brain
> image".
>
> If the 2-D image corresponds to a cross section *through* the volume
> of
> the 3-D image then this is fine. If, instead, it consists of values
> corresponding
> to "surface" voxels of the brain then it is not possible.
>
> It should be possible with flirt to register your 2-D slice onto a 3-
> D image
> if you are in the first situation above. In this case all you need
> to do is use
> the 3-D image as the reference and the 2-D slice as the input,
> although
> getting an initial orientation which is "close" is often critical in
> these situations.
> You can either use pointflirt or nudge to help you with this.
>
> If this doesn't answer your question then please provide us with a
> more detailed
> description of your problem.
>
> All the best,
> Mark
>
>
> On 23 Oct 2008, at 18:51, Yunjie Tong wrote:
>
>> Hi,
>>
>> I am trying to project a rectangular 2-D image (obtained from other
>> imaging modality) onto the surface of a 3-D MRI brain image. I know
>> the corresponding locations of the four corners (of my 2-D image)
>> on the head. Can I use flirt to wrap my 2-D image on the head's
>> surface based on those 4 locations (corners) ? Thanks in advance.
>>
>> Best,
>>
>> Yunjie
|