Low frequency magnetic resonance conductivity imaging by means of oscillating gradient fields

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EROĞLU H. H., SADİGHİ M., EYÜBOĞLU B. M.

Annual Meeting of the International Society for Magnetic Resonance in Medicine (ISMRM), Paris, Fransa, 16 - 21 Haziran 2018, cilt.26, ss.2287

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 26
  • Basıldığı Şehir: Paris
  • Basıldığı Ülke: Fransa
  • Sayfa Sayıları: ss.2287
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Recently, low frequency (LF) magnetic resonance electrical conductivity imaging by means of oscillating gradient fields is reported to be infeasible. In these

studies, LF phase measurements are modeled with radio frequency (RF) leakage due to geometric shifts in MR images. Although RF leakage is related with

conductivity, we have not come across a conductivity image reconstructed using this model. In this study, LF conductivity imaging is evaluated for an MRI

pulse sequence including multiple gradient pulses. Geometric shifts are evaluated by focusing on the MR magnitude. A procedure is proposed for the

reconstruction of conductivity, based on LF phase measurements.