[Insight-users] Multi Modality Image Co Registration

[Bill Lorensen]

When I say landmark, I mean the landmark that the radiologist sets in
the scanner.

On Tue, Jul 7, 2009 at 9:22 AM, Albert King<albert.king84 at yahoo.com> wrote:
> 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
>>>
>>> _____________________________________
>>> Powered by www.kitware.com
>>>
>>> Visit other Kitware open-source projects at
>>> http://www.kitware..com/opensource/opensource.html
>>>
>>> Please keep messages on-topic and check the ITK FAQ at:
>>> http://www.itk.org/Wiki/ITK_FAQ
>>>
>>> Follow this link to subscribe/unsubscribe:
>>> http://www.itk.org/mailman/listinfo/insight-users
>>>
>>>
>>
>>
>
>