Patent ID: 6943551
Filing Date: 2005-09-13
Classification: G01R

Abstract:
1. A magnetic resonance antenna having a longitudinal axis, comprising: a birdcage structure having a longitudinal axis and having an eigen-resonance frequency, said birdcage structure comprising a plurality of parallel, longitudinal antenna rods, each having opposite ends, and antenna ferrules respectively at said opposite ends of said longitudinal antenna rods connected to said longitudinal antenna rods in terms of radio-frequency; a plurality of radio-frequency switching elements respectively connected to said antenna rods for, when switched, interrupting the respective antenna rods in terms of radio-frequency for detuning said eigen-resonance frequency with respect to an operating magnetic resonance frequency; and two switching lines connected in common to said radio-frequency switching elements from an exterior of said birdcage structure, each switching line comprising a ring line disposed annularly with respect to said birdcage structure and transversely to said longitudinal antenna rod.