Abstract #2928
Evaluation of Radio-Frequency Field Mapping Methods for Quantitative Sodium MRI at 3 Tesla
Jonathan Lommen 1 , Simon Konstandin 1 , Philipp Krmer 1 , and Lothar R. Schad 1
1
Computer Assisted Clinical Medicine,
Heidelberg University, Mannheim, Germany
Quantitative sodium MRI requires corrections for rf
field inhomogeneities in order to determine the total
tissue sodium concentration. The low SNR and fast decay
of the sodium signal are hard restrictions for mapping
techniques. Thus, the performance of four common methods
(PS, BSS, DAM, AFI) has been compared to find the
adequate method. The PS method shows best SNR and
fastest acquisition time. This enables more accurate and
fast in-vivo sodium quantification being a sign of
tissue viability.
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