• 대한자기공명의과학회:학술대회논문집
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• 대한자기공명의과학회 1998년도 제3차 추계학술대회 초록집
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• pp.74-74
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• 1998

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년 학술대회 논문집 정보 및 제어부문
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• pp.235-237
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• 2006

In this paper, the previous 2-D gradient coil design method using loop current elements is extended to 3-D or multi-layer structures which is useful for various MRI applications including MR microscopic imaging where relatively large space may be available for the implementation of the gradient coils. Either the power consumption or the stored energy (thus, inductance), or the combination of the two can be minimized with a set of chosen target field constraints. Complete 3-D design equations for the optimization as well as inductance or resistance calculation are derived. An effective coil shape correction method for a curved current pattern is also developed. The design method can also be easily extended to the active shielding structure.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1997년도 춘계학술대회
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• pp.108-110
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• 1997

In MRI, gradient coils are needed for spatial selection and position coding to obtain the position information of the NMR signal. In this paper, a new design scheme for actively-shielded x, y-gradient coils, namely, a minimum-power and/or minimum-inductance design scheme using current-loop elements, has been proposed. Its utility in designing MRI gradient coils has been shown by using simulation. An actively-shielded x-gradient coil has been designed as an example and the results are presented. The design scheme seems to be useful for actively-shielded transverse gradient coils, even of non-cylindrical or of arbitrarily -selected shapes.