Eddy current effects in MRI superconducting magnets

被引：16

作者：

Badea, EA ^{[1
]}

Craiu, O ^{[1
]}

机构：

[1] POLYTECH UNIV BUCHAREST,BUCHAREST 77206,ROMANIA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1997年 / 33卷 / 02期

关键词：

D O I：

10.1109/20.582501

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Magnetic resonance imaging (MRI), as well as some volume selected spectroscopy methods, use pulsed magnetic field gradients which induce multi-exponentially decaying eddy currents in all nonlaminated conductive parts of the superconducting magnets. This paper presents the analysis of the z gradient field distorsion due to the induced eddy currents and the corresponding correction in a 4 T/30 cm bore superferric self-shielded magnet.

引用

页码：1330 / 1333

页数：4

共 7 条

[1] INFINITE ELEMENTS FOR CYLINDRICAL GEOMETRIES [J].

BADEA, EA ;

PISSANETZKY, S .

COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING, 1994, 13 (02) :417-425

[2] ACCURATE CUBIC SPLINE INTERPOLATION OF MAGNETIZATION TABLES [J].

BADEA, EA ;

PISSANETZKY, S .

COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING, 1993, 12 (01) :49-58

[3]

BADEA EA, 1990, P IGTE S GRAZ AUSTR

[4]

BALA CV, 1990, P EUR TEAM WORKSH OX, P205

[5]

HUSON FR, 1991, HIGH FIELD SUPERFERI

[6] ANALYTICAL METHOD FOR THE COMPENSATION OF EDDY-CURRENT EFFECTS INDUCED BY PULSED MAGNETIC-FIELD GRADIENTS IN NMR SYSTEMS [J].

JEHENSON, P ;

WESTPHAL, M ;

SCHUFF, N .

JOURNAL OF MAGNETIC RESONANCE, 1990, 90 (02) :264-278

[7]

RIDDLE WR, 1991, BOOK ABSTRACTS SMRM, V1, P453

← 1 →