Journal
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Volume 48, Issue 3, Pages 418-428Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/8.841903
Keywords
magnetic resonance; signal-to-noise ratio
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Approximating the human body by a homogeneous half-space or cylinder the electromagnetic fields of surface antennas or wholebody antennas for magnetic resonance imaging (MRI) can analytically be calculated, Using these expressions the signal-to-noise ratio (SNR) of a general magnetic resonance detecting antenna ran be predicted. We show how the optimum magnetic resonance antenna must look like to achieve the maximum SMR, which will also be presented. Finally, we apply the derived formulas to special antenna geometries like the single-and the double-loop coil, the magnetic dipole, and the birdcage resonator.
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