Three dimensional localized coil for magnetic resonance imaging

Details Three dimensional localized coil for magnetic resonance imaging Three dimensional localized coil for magnetic resonance imaging

1986-11-17

1988-06-21

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324309, 128653, G01R 3320

Patent

active

047527382

ABSTRACT:
The magnetic resonance signals in a magnetic resonance imaging apparatus are detected by a surface or localized coil assembly (D). To improve the field homogeneity and increase the signal-to-noise ratio when examining a region of interest deep within a subject, the surface coil assembly is configured with a first coil portion (22) and a second coil portion (24). The first coil portion is disposed along an exterior surface of the subject. The second coil portion is disposed parallel to the first coil portion and displaced outward a distance (44) from the first coil portion and the subject exterior surface. The first and second coil portions are electrically interconnected with an opposite current phase in a dipole pair such that the second current portion reduces the sensitivity of the first coil portion to magnetic resonance signals originating close to the surface of the subject.

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"Noise Performance of Surface Coils for Magnetic Resonance Imaging at 1.5 T" by Cecil E. Hayes and Leon Axel, Medical Physics, vol. 12, No. 5, Sep./Oct. 1985.
"High Resolution Methods Using Local Coils" by James S. Hyde, Ph.D. and J. Bruce Kneeland, MD., Biomedical Magnetic Resonance Imaging, VCH Publishers, Inc., 1985.

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