J-Substitution and Filtered Equipotential-Projection Based Hybrid MREIT Reconstruction Algorithm

Boyacioglu R., EYÜBOĞLU B. M.

11th International Congress of the IUPESM/World Congress on Medical Physics and Biomedical Engineering, Munich, Almanya, 7 - 12 Eylül 2009, cilt.25, ss.308-311 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 25
  • Basıldığı Şehir: Munich
  • Basıldığı Ülke: Almanya
  • Sayfa Sayıları: ss.308-311
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Magnetic Resonance Electrical Impedance Tomography (MREIT) reconstructs true conductivity images by using current density distribution and surface potential measurements. In this study, equipotential projection [1] and J-substitution image reconstruction [2] algorithms for MREIT are compared. A novel reconstruction method, J-substitution and filtered equipotential-projection based hybrid reconstruction algorithm, is proposed. In this method, the image reconstructed with equipotential projection algorithm is filtered and then assigned as the starting conductivity distribution for J-substitution algorithm. True conductivity distribution can also be reconstructed with two surface potential measurements. Methods are simulated on a thorax phantom and results show that the proposed method has an improved performance in some regions.