Title :
Direct image reconstruction for electromagnetic tomography by using the factorization method
Author :
Cao, Zhang ; Xu, Lijun ; Xu, Chenfeng ; Zhu, Yanping
Author_Institution :
Sch. of Instrum. Sci. & Opto-Electron. Eng., Beihang Univ., Beijing, China
Abstract :
A factorization method was introduced to electromagnetic tomography (EMT) in this paper. Compared with the traditional methods based on the sensitivity theorem, the proposed method can generate the reconstructed images directly. Neither matrix inversion nor iterations is needed in the reconstruction process. The reconstruction process is simple, as the test function is calculated according to the fundamental solution to the governing equation, i.e. the Helmholtz equation. Simulated data were used to validate the feasibility and effectiveness of the proposed method for EMT.
Keywords :
Helmholtz equations; biomedical equipment; data analysis; electromagnetic devices; image reconstruction; matrix decomposition; medical image processing; tomography; EMT sensor; Helmholtz equation; data analysis; direct image reconstruction; electromagnetic tomography; factorization method; Conductivity; Equations; Image reconstruction; Mathematical model; Permeability; Tomography; direct algorithm; electromagnetic tomography; factorization method; image reconstruction;
Conference_Titel :
Imaging Systems and Techniques (IST), 2011 IEEE International Conference on
Conference_Location :
Penang
Print_ISBN :
978-1-61284-894-5
DOI :
10.1109/IST.2011.5962168