Circularly polarized local antenna arrangement for a nuclear mag

Details Circularly polarized local antenna arrangement for a nuclear mag Circularly polarized local antenna arrangement for a nuclear mag

Filed on

1993-09-24

Date issued

1995-11-28

Examiner

O'Shea, Sandra L.

Patent Class

Electricity: measuring and testing

SubClass

Particle precession resonance

SubSubClass

Spectrometer components

Other Related Categories

324322, G01R 3328

Type

Patent

Status

active

Patent number

054711428

Description

ABSTRACT:
An antenna arrangement for a magnetic resonance imaging apparatus is composed of an array having at least three linearly polarized local coils which mutually overlap to such an extent that they are geometrically decoupled. Each local coil is separately connected to a combination network wherein a complex operation between the output signals of the respective local coils is produced such that a radio-frequency signal corresponding to a circular polarization is obtained.

REFERENCES:
patent: 4467282 (1984-08-01), Siebold
patent: 4816765 (1989-03-01), Boskamp
patent: 4825162 (1989-04-01), Roemer et al.
patent: 4906933 (1990-03-01), Keren
patent: 4975644 (1990-12-01), Fox
patent: 5160891 (1992-11-01), Keren
patent: 5196796 (1993-03-01), Misic
patent: 5198768 (1993-03-01), Keren
patent: 5241272 (1993-08-01), Friedrich
patent: 5258717 (1993-11-01), Misic

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