Mapping Technique of Basic Magnetic Field in MR Tomography

0367557 - ÚPT 2012 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Hadinec, M. - Fiala, P. - Bartušek, Karel
Mapping Technique of Basic Magnetic Field in MR Tomography.
PIERS 2011 Marrakesh Proceedings. Cambridge: The Electromagnetics Academy, 2011, s. 161-165. ISBN 978-1-934142-16-5.
[PIERS 2011 Marrakesh. Marrakesh (MA), 20.04.2011-23.04.2011]
Výzkumný záměr: CEZ:AV0Z20650511
Klíčová slova: MRI * magnetic field * magnetic flux density
Kód oboru RIV: JA - Elektronika a optoelektronika, elektrotechnika

The paper presents a mapping method, which is used to obtain boundary conditions on desired volume. The process of obtaining the magnetic flux density from NMR spectral characteristics is explained. The spherical functions are used for magnetic flux density approximation. The discussion of suitable degree and order for approximation is made. Then maps of magnetic flux density inside measured volume are computed. These maps are compared to measured phase images. Phase images are gained by mapping technique based on MRI methods. The comparison algorithm is made in Matlab and results are discussed.
Trvalý link: http://hdl.handle.net/11104/0202194