Asymmetrische Hochfrequenzspulenanordnung für Bilderzeugung mittels magnetischer Resonanz

An NMR excitation coil includes a plurality of conductive elements having varying lengths and arranged parallel to one another to define a cylindrical volume. A planar loop connects one end of the conductive element together with conductive segments between pairs of the conductive elements. A non-pl...

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Bibliographic Details
Main Author FREDERICK, PERRY SCOTT, WAUKESHA, WISCONSIN 53188, US
Format Patent
LanguageGerman
Published 08.10.1998
Edition6
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
MEDICAL OR VETERINARY SCIENCE
PHYSICS
SURGERY
TESTING
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Summary:An NMR excitation coil includes a plurality of conductive elements having varying lengths and arranged parallel to one another to define a cylindrical volume. A planar loop connects one end of the conductive element together with 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 that 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.
Bibliography:Application Number: DE19936017327T