Design and evaluation of a transverse gradient set for magnetic resonance imaging of the human brain

被引：9

作者：

Fisher, BJ

Dillon, N

Wilkinson, AA

Carpenter, TA

Hall, LD

机构：

[1] Herchel Smith Lab. for Med. Chem., University Forvie Site, Cambridge CB2 2PZ, Robinson Way

[2] Royal Greenwich Observatory, Cambridge CB3 OEZ, Madingley Road

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 1996年 / 7卷 / 05期

关键词：

D O I：

10.1088/0957-0233/7/5/016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A genetic algorithm has been used to design a 35 cm diameter transverse gradient set for human brain imaging. Despite strict constraints on the maximum coil length (33 cm), gradient performance comparable to that from far longer sets of conventional geometry is achieved; thus the gradient efficiency is 0.13 mT m(-1) A(-1) with a 24% standard deviation from this within a 26 cm sphere. Phase maps obtained using a gradient-acquisition for shimming sequence were used to test the linearity of the gradients without requiring a complex phantom.

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页码：838 / 843

页数：6

相关论文

共 10 条

[1] LOW INDUCTANCE TRANSVERSE GRADIENT SYSTEM OF RESTRICTED LENGTH [J].

ANDREW, ER ;

SZCZESNIAK, E .

MAGNETIC RESONANCE IMAGING, 1995, 13 (04) :607-613

[2] A QUIET GRADIENT-COIL SET EMPLOYING OPTIMIZED, FORCE-SHIELDED, DISTRIBUTED COIL DESIGNS [J].

CHAPMAN, BLW ;

MANSFIELD, P .

JOURNAL OF MAGNETIC RESONANCE SERIES B, 1995, 107 (02) :152-157

[3] QUADRUPOLE GRADIENT COIL DESIGN AND OPTIMIZATION - A PRINTED-CIRCUIT BOARD APPROACH [J].

CHU, KC ;

RUTT, BK .

MAGNETIC RESONANCE IN MEDICINE, 1994, 31 (06) :652-659

[4] A DESIGN METHODOLOGY FOR SHORT, WHOLE-BODY, SHIELDED GRADIENT COILS FOR MRI [J].

CROZIER, S ;

DODDRELL, DM .

MAGNETIC RESONANCE IMAGING, 1995, 13 (04) :615-620

[5] DESIGN BY GENETIC ALGORITHM OF A Z-GRADIENT SET FOR MAGNETIC-RESONANCE-IMAGING OF THE HUMAN BRAIN [J].

FISHER, BJ ;

DILLON, N ;

CARPENTER, TA ;

HALL, LD .

MEASUREMENT SCIENCE AND TECHNOLOGY, 1995, 6 (07) :904-909

[6]

Golay MJE, 1970, US Patent, Patent No. [3515979, 3,515,979]

[7] CONSTRUCTIONAL TOLERANCES OF SHIELDED GRADIENT-COIL SETS IN RELATION TO ARTIFACTS IN MRI AND ERRORS IN IN-VIVO MRS [J].

LIU, Q ;

HUGHES, DG ;

ALLEN, PS .

JOURNAL OF MAGNETIC RESONANCE SERIES B, 1995, 108 (03) :205-212

[8] GRADIENT COIL DESIGN - A REVIEW OF METHODS [J].

TURNER, R .

MAGNETIC RESONANCE IMAGING, 1993, 11 (07) :903-920

[9] RAPID, FULLY-AUTOMATIC, ARBITRARY-VOLUME INVIVO SHIMMING [J].

WEBB, P ;

MACOVSKI, A .

MAGNETIC RESONANCE IN MEDICINE, 1991, 20 (01) :113-122

[10] COIL OPTIMIZATION FOR MRI BY CONJUGATE-GRADIENT DESCENT [J].

WONG, EC ;

JESMANOWICZ, A ;

HYDE, JS .

MAGNETIC RESONANCE IN MEDICINE, 1991, 21 (01) :39-48