A “wrap-around”, high strength gradient set for orthopaedic MRI

Author

Crozier, S. ; Roffman, W.U. ; Luescher, K. ; Doddrell, D.M.

Author_Institution

Centre for Magnetic Resonance, Queensland Univ., Brisbane, Qld., Australia

Volume

2

fYear

1998

fDate

29 Oct-1 Nov 1998

Firstpage

690

Abstract

A novel 3-axis gradient set and RF resonator for orthopaedic MRI has been designed and constructed. The set is openable and may be wrapped around injured joints. The design methodology used was the minimization of magnetic field spherical harmonics by Simulated Annealing. The constructed set generated maximum of 12 G/cm with a linear region of 12 cm, conforming closely with theoretical predictions. The set is currently being used in the authors´ 2 T medical scanner and knee images are included in this paper

Keywords

biomedical MRI; biomedical equipment; medical image processing; orthopaedics; resonators; simulated annealing; “wrap-around” high strength gradient set; 12 cm; 2 T; 2 T medical scanner; 3-axis gradient set; RF resonator; design methodology; injured joints; knee images; linear region; magnetic field spherical harmonics minimization; magnetic resonance imaging; medical diagnostic imaging; medical instrumentation; orthopaedic MRI; Biomedical imaging; Design methodology; Knee; Magnetic fields; Magnetic resonance imaging; Medical simulation; Minimization methods; Orthopedic surgery; Radio frequency; Simulated annealing;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE

Conference_Location

Hong Kong

ISSN

1094-687X

Print_ISBN

0-7803-5164-9

Type

conf

DOI

10.1109/IEMBS.1998.745513

Filename

745513