Quadrature elliptical birdcage coil for NMR

Details Quadrature elliptical birdcage coil for NMR Quadrature elliptical birdcage coil for NMR

1997-03-21

1999-11-16

Oda, Christine

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324322, G01V 300

Patent

active

059864540

ABSTRACT:
Angular and current distributions for an elliptical birdcage resonator are realized in a design that achieves constant electrical phase between adjacent legs of the coil. Equal peak currents in the driven legs of the orthogonal modes yields exact quadrature operation.

REFERENCES:
patent: 4751464 (1988-06-01), Bridges
patent: 5321360 (1994-06-01), Mansfield
patent: 5372137 (1994-12-01), Wong et al.
patent: 5543711 (1996-08-01), Srinivasan et al.
Abstract by W.E. Bimson et al., entitled "An Elliptical Cross Section Birdcage Body Coil", published in Book of Abstracts, vol. 1, Society of Magnetic Resonance in Medicine, Eleventh Annual Scientific Meeting, Aug. 8-14, 1992, Berlin, Germany, p. 272.
Article by K. Forbes et al., entitled "An Analysis and Optimization of Elliptical RF Probes Used in Magnetic Resonance Imaging", published in Measurement Science and Technology, vol. 7, No. 9, Sep. 1996, pp. 1281-1290.
Abstract by R. Kurezewski et al., entitled "Design of Elliptically Shaped Quadrature Pediatric Body Coils", published in Book of Abstracts, vol. 2, Society of Magnetic Resonance in Medicine, Eleventh Annual Scientific Meeting, Aug. 8-14, 1992, Berlin Germany, pp. 4025.
Abstract by B.L. Beck et al., entitled "Linear and Quadrature Characteristics of an Elliptical Birdcage", Proceedings of the Society of magnetic Resonance, vol. 3, Second Meeting, Aug. 6-12, 1994, San Francisco, USA, p. 1111.
Abstract by K. Li et al., entitled "A Method to Create an Optimum Current Distribution and Homogenous B.sub.1 Field in Elliptical Birdcage Coils", Proceedings of the International Society For Magnetic Resonance in Medicine, Fourth Scientific Meeting and Exhibition, Apr. 27, May 3, 1996, New York, USA, vol. 3, p. 1411.
Abstract by Casey Li and Michael Smith, entitled "Theoretical Calculations of the Optimum Current Distribution for an Elliptical Birdcage RF Coil", Proceedings of the Society of Magnetic Resonance in Medicine, vol. 3, Twelfth Annual Scientific Meeting, Aug. 14-20, 1993, New York, USA, p. 1342.

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