Measurement of Inhomogeneity in the B0 and B1 Fields Performed via the Spin-Echo and Gradient-Echo MR Imaging Techniques

0395170 - ÚPT 2014 RIV GB eng C - Conference Paper (international conference)
Kubásek, R. - Gescheidtová, E. - Bartušek, Karel
Measurement of Inhomogeneity in the B0 and B1 Fields Performed via the Spin-Echo and Gradient-Echo MR Imaging Techniques.
PIERS 2013 Taipei Proceedings. Cambridge: The Electromagnetics Academy, 2013, s. 381-384. ISBN 978-1-934142-24-0. ISSN 1559-9450.
[The 33rd PIERS in Taipei. Progress in Electromagnetics Research Symposium. Taipei (TW), 25.03.2013-28.03.2013]
R&D Projects: GA ČR GA102/09/0314
Institutional support: RVO:68081731
Keywords : MRI * RF field * relaxation
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering

The authors describe a method for the basic and RF field inhomogeneity estimation in NMR based on the measurement of T2 and T*2 .The method combines the gradient and spin echo acquisition techniques to differentiate the T2 and T*2 relaxation times. Exponential approximation of the relaxation process has to be performed. Experimental results for the plastic and copper specimens are shown.
Permanent Link: http://hdl.handle.net/11104/0225239