Title :
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
fDate :
29 Oct-1 Nov 1998
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;
Conference_Titel :
Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE
Conference_Location :
Hong Kong
Print_ISBN :
0-7803-5164-9
DOI :
10.1109/IEMBS.1998.745513
