Imaging and spectroscopy at high static field (>3T) is proving to be very successful since it yields increased SNR, allowing improved spatial resolution, and also provides better spectral resolution. The single tuned TEM resonator design has been proposed [1-2] for its improved RF characteristics with respect to the standard birdcage coil. The theory of Multiconductor Transmission Lines (MTL) [3] has been used to calculate the N/2+1 modes of the single tuned TEM resonator, made of N identical coupled coaxial [4-6] or microstrip [7] elements. However, despite the important applications of high field multinuclei MRI, only one paper [2] reported the measured frequency response of a double tuned TEM resonator. In this study we present the MTL modelling of double tuned TEM resonators and workbench validation in a frequency range of 100- 350 MHz.
Theory of Double Tuned TEM Resonators and Workbench Validation in a Frequency Range of 100-350 MHz
PLACIDI, GIUSEPPE;ALECCI, MARCELLO
2005-01-01
Abstract
Imaging and spectroscopy at high static field (>3T) is proving to be very successful since it yields increased SNR, allowing improved spatial resolution, and also provides better spectral resolution. The single tuned TEM resonator design has been proposed [1-2] for its improved RF characteristics with respect to the standard birdcage coil. The theory of Multiconductor Transmission Lines (MTL) [3] has been used to calculate the N/2+1 modes of the single tuned TEM resonator, made of N identical coupled coaxial [4-6] or microstrip [7] elements. However, despite the important applications of high field multinuclei MRI, only one paper [2] reported the measured frequency response of a double tuned TEM resonator. In this study we present the MTL modelling of double tuned TEM resonators and workbench validation in a frequency range of 100- 350 MHz.Pubblicazioni consigliate
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