Theoretical description of the interaction between birdcage coils and lossy samples.
An analysis is presented of the interaction between a long cylindrical imaging coil, commonly called a low-pass birdcage coil, and a cylindrical sample. Predicted and measured values of coil Q are shown to compare well throughout the resonance spectrum of an experimental coil-sample system. The analysis may be used to calculate feed-point impedances and is easily extended to high-pass coils.
Harpen
M D
MD
Department of Radiology, University of South Alabama, Mobile 36617.
D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008433:Mathematics; D008962:Models, Theoretical