[Insight-users] Multi Modality Image Co Registration

[Albert King]

Hi Bill,

Thanks for the reply.Is there registration monitoring Mechanism in ITK.How to set the landmarks on ct images so that corresponding landmarks appear on MRI .I mean assume that I defined 4 landmarks on CT images now i want to define the lanmarks on MRI corresponding to the same slice as of ct .In order to check the accuracy of registration can i view the landmark list by means of itk registration algorithms.Please Help

Regards

Albert




________________________________
From: Bill Lorensen <bill.lorensen at gmail.com>
To: Albert King <albert.king84 at yahoo.com>
Cc: Insight-Users <insight-users at itk.org>
Sent: Tuesday, July 7, 2009 6:20:39 PM
Subject: Re: [Insight-users] Multi Modality Image Co Registration

No. You do not need to perform an MPR. You may have to translate if
they are not landmarked the same. By landmark, I mean the zero
position they set in the exam. For instance in a head exam, they may
landmark at the bridge of the nose.

On Tue, Jul 7, 2009 at 8:35 AM, Albert King<albert.king84 at yahoo.com> wrote:
> Hi Bill,
>
> Thanks for the reply, but radiologists tell that ct and mri scans are
> performed at different angluations and landmarks.In that case do I have to
> perform a MPR on CT so as to match the landmark of MRI.
>
>
> Thanks and Regards
> Bill
>
> ________________________________
> From: Bill Lorensen <bill.lorensen at gmail.com>
> To: Albert King <albert.king84 at yahoo.com>
> Cc: insight-users at itk.org
> Sent: Tuesday, July 7, 2009 5:48:56 PM
> Subject: Re: [Insight-users] Multi Modality Image Co Registration
>
> Albert,
>
> itk performs registration in physical space. For radiology data, the
> units are normally in mm's.
>
> If the CT and MR data were landmarked similarly, you should not have
> to modify either dataset. You do not have to resample or reorient
> either volume.
>
> That said, the picking of parameters can be tricky.
>
> Bill
>
> On Tue, Jul 7, 2009 at 8:11 AM, Albert King<albert.king84 at yahoo.com> wrote:
>> Hi All,
>>
>> I am trying to perform Image Co registration (fusion ) of CT and MRI dicom
>> Images .Considering my registration as rigid registration (translation ,
>> rotation and scaling) I have fused a single slice of a CT amd MRI using
>> Image registration 8.cxx.I have the following Queries.
>>
>> CT data set is obtained from the scanner at a different angulation from
>> that
>> of MRI (i.e . the way we acquire CT data set is different and the way we
>> acquire MR data set is different).Do I have to perform Multi Planr
>> reformation of the CT datatset to match  the MRI angulation .
>> CT data set Matrix Size is of 512 x 512  and MRI data set Matrix Size is
>> 256
>> x 256.Do I have to rescale so as to avoid mis registration.
>> Choosing the right values of different parameters for satisfactory
>> registration is a tricky job.Is there any registration monitoring
>> mechanism
>> in ITK.
>>
>>
>>
>> Please Help.Thanks in Advance.
>>
>>
>>
>>
>>
>> Regards
>>
>>
>>
>> Albert
>>
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>
>



      
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