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Abstract #3554

Correction of transmit-field induced signal inhomogeneity in 3D MP-FLAIR at 7T

Jan Ole Pedersen1, Vincent O. Boer2, Oula Puonti2, Jaco M. Zwanenburg3, and Esben Thade Petersen2,4
1Philips Healthcare, Copenhagen, Denmark, 2Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital, Hvidovre, Denmark, 3Department of Radiology, University Medical Center Utrecht, Utrcecht, Netherlands, 4Section for Magnetic Resonance, DTU Health Tech, Technical University of Denmark, Kgs Lyngby, Denmark

In order to ease radiological assessment of 7T MP-FLAIR images, we have developed a fully automated bias-field correction that reduces apparent signal loss caused by inhomogeneities in the RF transmit field. Using simulations and measurements of the transmit field, the bias-field can be corrected for without relying on the simplifying assumptions used in a typical bias-field correction. The algorithm is expandable to other TSE-based sequences and adds limited additional scan time.

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