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.
| Original language | English |
|---|---|
| Pages (from-to) | 654-659 |
| Number of pages | 6 |
| Journal | Transactions of the Korean Society of Mechanical Engineers, A |
| Volume | 32 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2008 Aug 1 |
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All Science Journal Classification (ASJC) codes
- Mechanical Engineering
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Optimal design of an MRI device considering the homogeneity of the magnetic field. / Lee, Junghoon; Yoo, Jeonghoon.
In: Transactions of the Korean Society of Mechanical Engineers, A, Vol. 32, No. 8, 01.08.2008, p. 654-659.Research output: Contribution to journal › Article
TY - JOUR
T1 - Optimal design of an MRI device considering the homogeneity of the magnetic field
AU - Lee, Junghoon
AU - Yoo, Jeonghoon
PY - 2008/8/1
Y1 - 2008/8/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=49349096356&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=49349096356&partnerID=8YFLogxK
U2 - 10.3795/KSME-A.2008.32.8.654
DO - 10.3795/KSME-A.2008.32.8.654
M3 - Article
AN - SCOPUS:49349096356
VL - 32
SP - 654
EP - 659
JO - Transactions of the Korean Society of Mechanical Engineers, A
JF - Transactions of the Korean Society of Mechanical Engineers, A
SN - 1226-4873
IS - 8
ER -