A quasi-static analysis for a class of induced-current EIT systems using discrete coils

Koksal A., Eyuboglu B., Demirbilek M.

IEEE TRANSACTIONS ON MEDICAL IMAGING, cilt.21, sa.6, ss.688-694, 2002 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 21 Sayı: 6
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1109/tmi.2002.800603
  • Dergi Adı: IEEE TRANSACTIONS ON MEDICAL IMAGING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.688-694
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

A discrete coil EIT system is investigated for the general case of an eccentric circular inhomogeneity. The solution methodology of the forward problem of this system is explained. An optimization procedure using this forward problem solution is developed to rind optimum currents that maximize the distinguishability. For an eccentric inhomogeneity problem, it is shown that the coil currents can be optimized to focus the current density in a region of interest. Optimum coil currents under limited peak coil currents constraint and limited total power constraint are obtained. Representative examples that demonstrate the performance of the system are presented.