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http://dx.doi.org/10.3795/KSME-A.2008.32.8.654

Optimal Design of an MRI Device Considering the Homogeneity of the Magnetic Field  

Lee, Jung-Hoon (연세대학교 기계공학과 대학원)
Yoo, Jeong-Hoon (연세대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.32, no.8, 2008 , pp. 654-659 More about this Journal
Abstract
This paper is to suggest a concept design of the permanent magnet type magnetic resonance imaging (MRI) device based on the parameter optimization method. Pulse currents in the gradient coils will introduce the effect of eddy currents in the ferromagnetic material, which will worsen the quality of imaging. In order to equalize the magnetic flux in the MRI device for good imaging, the eddy current effect in the ferromagnetic material must be taken into account. This study attempts to use the design of experiment (DOE) and the response surface method (RSM) for equalizing the magnetic flux of the permanent magnet type MRI device using that the magnetic flux can be calculated directly using a commercial finite element analysis package. As a result, optimal shapes of the pole and the yoke of the PM type MRI device can be obtained. The commercial package, ANSYS, is used for analyzing the magnetic field problem and obtaining the resultant magnetic flux.
Keywords
Magnetic Resonance Imaging; Magn; etic Field; Design of Experiment; Response Surface Method; Finite Element Analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 1
연도 인용수 순위
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