Joe Murphy-Boesch, Jacco A de Zwart, Peter van Gelderen, Stephen J Dodd, Frank Mauconduit, Alexandre Vignaud, Nicolas Boulant, Alan P Koretsky, Jeff H Duyn, Natalia Gudino
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引用次数: 0
Abstract
Objective: We present a 500 MHz inductive birdcage RF resonator for imaging the human brain in an 11.7 T MRI scanner. A homogenous circularly polarized transmit field (B1 +) was generated by transmitting power to the resonator through four couplers driven in differential mode and with an incremental 90-degree phase delay. A detailed mechanical and electrical model of the hardware, loaded with different phantoms, was generated and its performance simulated using a finite-difference timedomain method. The model was validated through bench and MRI measurements. This validation is important for future analysis of radiofrequency safety and performance through the prediction of SAR and B1 + profiles across different human brain models at various positions inside the coil.
期刊介绍：
IEEE Transactions on Biomedical Engineering contains basic and applied papers dealing with biomedical engineering. Papers range from engineering development in methods and techniques with biomedical applications to experimental and clinical investigations with engineering contributions.
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