Title :
Measurement of weakly magnetic material using new MR technique
Author :
Kadlecova, Eva ; Steinbauer, Miloslav
Author_Institution :
Brno Univ. of Technol., Brno
Abstract :
Materials with different magnetic susceptibility can cause deformation of magnetic field in MR tomograph, resulting in errors in obtained image. Using simulation and experimental verification we can solve the effect of changes in homogeneity of static magnetic fields caused by specimen made from magnetic material in MR tomograph. This paper describes theoretical base and experimental measurement of new magnetic resonance imaging method for susceptibility measurement. This technique is suitable for substances with no signal in MR tomography. The method uses deformation of magnetic induction field in specimen vicinity. For MR purposes it is necessary to immerse specimen into reference medium with measurable MR signal (water is suitable).
Keywords :
magnetic field measurement; magnetic materials; magnetic resonance imaging; magnetic susceptibility; MR technique; magnetic field deformation; magnetic induction field; magnetic resonance imaging method; magnetic susceptibility; specimen vicinity; static magnetic fields; susceptibility measurement; weakly magnetic material; Magnetic field measurement; Magnetic flux; Magnetic flux density; Magnetic materials; Magnetic resonance imaging; Magnetic susceptibility; Magnetization; Paramagnetic materials; Shape measurement; Superconducting magnets;
Conference_Titel :
Applied Electronics, 2006. AE 2006. International Conference on
Conference_Location :
Pilsen
Print_ISBN :
80-7043-442-2
DOI :
10.1109/AE.2006.4382971