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Poster communications

BEEEP: B1-robust Energy Efficient Excitation Pulses

Abstract : Synopsis This study introduces a new family of broadband B1-robust excitation (90°) pulses for MRI with large enough bandwidth (+/- 1 kHz) to account for static field inhomogeneities, and minimal energy deposition. RF pulses are designed with a regularized optimal control algorithm, which is able to adapt the pulse B1-robustness range to fit the coil limits in terms of peak amplitude and energy. In vitro acquisitions using an endoluminal-shaped RF transmit coil show comparable excitation profiles than BIR4 pulses, although BEEEP pulses deposit 5.2 times less energy. https://index.mirasmart.com/ISMRM2019/PDFfiles/4623.html
Document type :
Poster communications
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https://hal.archives-ouvertes.fr/hal-02130017
Contributor : Béatrice Rayet <>
Submitted on : Wednesday, May 15, 2019 - 2:56:27 PM
Last modification on : Wednesday, January 13, 2021 - 5:06:02 PM

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  • HAL Id : hal-02130017, version 1

Citation

Eric van Reeth, Hélène Ratiney, O. Beuf, Soukaina Kanice, Steffen Glaser, et al.. BEEEP: B1-robust Energy Efficient Excitation Pulses. 27th Annual meeting of the ISMRM, May 2019, Montreal, Canada. ⟨hal-02130017⟩

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