[Insight-users] how to use FEM in ITK

[Luis Ibanez]

Hi Guorong

You will find some examples on the use of FEM for medical
image registration in the directory

        Insight/Examples/Registration

The theoretical principles behind the FEM implementation in
ITK are described in a chapter of the book "Insight into Images"
that will be available soon from A.K.Peters.

       http://www.akpeters.com/book.asp?bID=206

You may also find useful the tutorial sessions

    http://www.itk.org/HTML/Tutorials.htm

in particular

http://www.itk.org/CourseWare/Training/NonRigidRegistrationMethods.pdf


Note that in most cases for image registration, FEM are not
used for modeling the real physics of the brain as a mechanical
material. Instead, we just take advantage of the natural
regularization provided by FEM when you model an hypothetical
elastic material.


Please let us know if you have further questions,


   Thanks,


      Luis



-------------------
Guorong Wu wrote:

> hello all:
> 	I am interested in non-rigid medical image registration of brain using finite element methods. There are too many methods in this field but I would rather look upon the human brain as a heterogeneous environment, that is, imagining humam brain is consisting of several anotomical structures(skull,white matter, gray matter, ventricle system and so on), and some of them are a soft material, while others are rigid body. We can identify them with different parameters. When doing registration, the force is derived from the difference between two images. Then the anatomical structure is deformed under the control of construction equation in contiuum mechanism. The whole process is simulated by coupling boundary method element and finite element method.
> 	I have used ITK for several months. I know ITK has some useful library for FEM. I find some demo example in ITKApplication/FEM directory. But I cannot find any help document. I am eager to know how to use these FEM API, what kind of work they can do. Can you give me some suggestions? I will appreciate for your help. Thanks.   
>  				
> 
> 　　　　　　　　Guorong Wu
> 　　　　　　　　grwu at sjtu.edu.cn
> 　　　　　　　　　　2004-07-08
> 
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> Guorong Wu	
> The Department of Computer Science and Technology
> Shanghai Jiao Tong University
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> Shanghai China    
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