Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1992-05-22
1994-05-03
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
G01R 3320
Patent
active
053091043
ABSTRACT:
An NMR excitation coil includes a plurality of conductive elements having varying lengths and arranged parallel to one another to define cylindrical volume. A planar loop connects one end of the conductive element together with the conductive segments between pairs of the conductive elements. A non-planar loop connects the other ends of the conductive elements with a series of conductive segments between pairs of the conductive elements. Some of the non-planar loop segments are formed by a coaxial cable having a central conductor connected between ends of two conductive elements and a shield the electrically floats. A separate capacitor is located in those segments of the two loops that are not formed by coaxial cables. Each capacitor has a capacitance which is defined by the inductance of the conductive elements connected to that capacitor.
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Paper entitled "Experimental Design and Fabrication of Birdcage Resonators for Magnetic Resonance Imaging" Thomas Vullo et al., 8306 Magnetic Resonance in Medicine 24 (1992) Apr., No. 2, Duluth, Minn. U.S. Apr. 1992.
General Electric Company
Tokar Michael J.
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