An inverse design method for elliptical MRI magnets

Citation
H. Zhao et S. Crozier, An inverse design method for elliptical MRI magnets, MEAS SCI T, 12(5), 2001, pp. 566-574
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
MEASUREMENT SCIENCE & TECHNOLOGY
ISSN journal
0957-0233 → ACNP
Volume
12
Issue
5
Year of publication
2001
Pages
566 - 574
Database
ISI
SICI code
0957-0233(200105)12:5<566:AIDMFE>2.0.ZU;2-Z
Abstract
An inverse, current density mapping (CDM) method has been developed for the design of elliptical cross-section MRI magnets. The method provides a rapi d prototyping system for unusual magnet designs, as it generates a 3D curre nt density in response to a set of target field and geometric constraints. The emphasis of this work is on the investigation of new elliptical coil st ructures for clinical MRI magnets. The effect of the elliptical aspect rati o on magnet performance is investigated. Viable designs are generated for s ymmetric, asymmetric and open architecture elliptical magnets using the new method. Clinically relevant attributes such as reduced stray field and lar ge homogeneous regions relative to total magnet length are included in the design process and investigated in detail. The preliminary magnet designs h ave several novel features.