[Insight-users] conversion of scan transofmration matrix between different modality

[kevin cavin]

Hello, Bill : 
 
     Thanks for  your reply.  What I hve found with the orginal volume is the orientation for CT and MRI scan is different. If I directly register these  two volume, I will get wrong registration result.  I assume the transformtion of orientation for one scan is necessary. but how can I do that with available ITK ? 
     I am using ITK version 3.12. 
 
Kind regards 
 
Calvin 


--- On Wed, 9/30/09, Bill Lorensen <bill.lorensen at gmail.com> wrote:


From: Bill Lorensen <bill.lorensen at gmail.com>
Subject: Re: [Insight-users] conversion of scan transofmration matrix between different modality
To: "kevin cavin" <beibeiwen2003 at yahoo.com>
Cc: insight-users at itk.org
Date: Wednesday, September 30, 2009, 11:36 PM


ITK should handle this. ITK uses the information stored in DICOM to compute an origin, spacing and direction. You should not have to convert the volume, assuming the patient scans are landmarked (in the scanner) at a similar location.

What version of ITK are you using? 


On Wed, Sep 30, 2009 at 11:04 AM, kevin cavin <beibeiwen2003 at yahoo.com> wrote:







Hi, Folks: 
 
      When I use ITK to register two dicom volume  from different modalities.  I have found that MR and CT scan often have different scan transformation matrixes. For example for CT scan the z direction is the y direction of MR scan. This will pose problem to register the two volumes with ITK. I am wondering whether in ITK the probelm can be solved soneway by using some function embedded. Do I need to write individual program to manula convert one of the volume.  Thanks in advance ! 
 
Kind regards 
 
Calvin 
 
 

 

 

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