Title:	Infinite boundary element application in optical mammography
Authors:	Panczyk, Maciej Sikora, Jan
Citation:	AMTEE ’09 : eighth international conference on Advanced Methods in the Theory of Electrical Engineering : September 07-09, 2009 [Cheb, Czech Republic].
Issue Date:	2009
Publisher:	University of West Bohemia
Document type:	konferenční příspěvek conferenceObject
URI:	http://cpee.zcu.cz/AMTEE/ArchivedProceedings/proceedings_AMTEE_2009/index.html http://hdl.handle.net/11025/25868
ISBN:	978-80-7043-821-3
Keywords:	nekonečné prvky;optická tomografie
Keywords in different language:	infinite elements;optical tomography
Abstract in different language:	Early detection or screening examination of breast cancer can be done using Optical Tomography or Electrical Impedance Tomography. Using Boundary Element Method for forward problem solution we can not make measurements or precisely define boundary conditions on the surface between breast and chest. A simple solution is to extend the mesh outside the region of interest and to truncate it in some distance from the investigated human breast. Wrong boundary conditions or improper placement of such artificial boundary can introduce an unknown error if the truncation occurs too near. On the other hand excessive mesh increases number of boundary elements and decreases the computational efficiency especially annoying while calculating inverse problem solution. Some discussion on a few simple models of the breast will be presented. Last model contains infinite boundary elements. Implementation of such elements can reduce the mesh and avoid the problem of setting incorrect boundary conditions by creating an open boundary model.
Rights:	© University of West Bohemia
Appears in Collections:	CPEE – AMTEE 2009

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