Magnetic resonance current density imaging using one component of magnetic flux density: An experimental study

ERSÖZ A. B., EYÜBOĞLU B. M.

12th Mediterranean Conference on Medical and Biological Engineering and Computing, MEDICON 2010, Chalkidiki, Yunanistan, 27 - 30 Mayıs 2010, cilt.29, ss.248-251 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 29
  • Doi Numarası: 10.1007/978-3-642-13039-7_62
  • Basıldığı Şehir: Chalkidiki
  • Basıldığı Ülke: Yunanistan
  • Sayfa Sayıları: ss.248-251
  • Anahtar Kelimeler: current density, electrical impedance, imaging, Magnetic resonance, tomography
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Magnetic Resonance Electrical Impedance Tomography (MREIT) algorithms to reconstruct conductivity distribution using current density distribution have been proposed in literature. The current density distribution can be determined by measuring distribution of magnetic flux density, B, generated by externally applied currents. This technique is known as Magnetic Resonance Current Density Imaging (MRCDI). Calculation of current density distribution from magnetic flux density measurements requires all three components of B using Biot-Savart law. Since MRI scanner can measure only the component of B parallel with the main magnetic field, object rotation is required to measure all three components of B for a given current injection pattern. In this study, a novel current density reconstruction algorithm using only the z-component of B, Bz, is proposed. © 2010 International Federation for Medical and Biological Engineering.