Accelerating acquisition strategies for low-frequency conductivity imaging using MREIT

Accelerating acquisition strategies for low-frequency conductivity imaging using MREIT

We sought to improve efficiency of magnetic resonance electrical impedance tomography data acquisition so that fast conductivity changes or electric field variations could be monitored. Undersampling of k-space was used to decrease acquisition times in spin-echo-based sequences by a factor of two. F...

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Veröffentlicht in:Physics in medicine & biology 2018-02, Vol.63 (4), p.045011-045011
Hauptverfasser: Song, Yizhuang, Seo, Jin Keun, Chauhan, Munish, Indahlastari, Aprinda, Ashok Kumar, Neeta, Sadleir, Rosalind
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electrical impedance tomography
k-space undersampling
MRI methods
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container_issue 4
container_start_page 045011
container_title Physics in medicine & biology
container_volume 63
creator Song, Yizhuang
Seo, Jin Keun
Chauhan, Munish
Indahlastari, Aprinda
Ashok Kumar, Neeta
Sadleir, Rosalind
description We sought to improve efficiency of magnetic resonance electrical impedance tomography data acquisition so that fast conductivity changes or electric field variations could be monitored. Undersampling of k-space was used to decrease acquisition times in spin-echo-based sequences by a factor of two. Full MREIT data were reconstructed using continuity assumptions and preliminary scans gathered without current. We found that phase data were reconstructed faithfully from undersampled data. Conductivity reconstructions of phantom data were also possible. Therefore, undersampled k-space methods can potentially be used to accelerate MREIT acquisition. This method could be an advantage in imaging real-time conductivity changes with MREIT.
doi_str_mv 10.1088/1361-6560/aaa8d2
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source IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link
subjects electrical impedance tomography
k-space undersampling
MRI methods
title Accelerating acquisition strategies for low-frequency conductivity imaging using MREIT
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