Meeting Banner
Abstract #1493

High B1 Dutycycle in Bilateral Breast Imaging at 7T

Michel G.M. Italiaander1, Peter J. Nijholt1, Oliver Kraff2, Alexander Raaijmakers1, Bertine Stehouwer1, Peter R. Luijten1, Dennis W.J. Klomp1

1Imaging division, University Medical Center, Utrecht, Netherlands; 2Erwin L. Hahn Institute for MRI, University Duisburg-Essen, Essen, Germany

Detection and staging of breast cancer can benefit from increased SNR that is potentially available at high magnetic fields like 7T. However, as strong T1 weighting in CE-MRI is required, a high density of strong flip angles need to be applied, that generally will be limited due to SAR constrains. Therefore we propose the use of efficient quadrature surface arrays to maximize CE-MRI efficiency at 7T in bilateral breast imaging while remaining within SAR guidelines. The relatively uniform CE-MRI sensitivity in both breasts, and very strong T1 weighting is demonstrated in a volunteer and in a patient with breast cancer.

Abstract PDF Poster PDF

Keywords

agent although applied arrays bilateral body boost boosting breast breasts cancer channel coil coils combined compromising consequently constrains contrast coupling covers cross cycle cylindrical datasets decoupling degree degrees density designs detection diffusion division duty dynamic effective effectively efficiency efficient element elements enable energy enhanced enhancement even excitation excite field fields five fixed fold form frequencies good healthy horizontal human improve indeed inductive institute interfaced intrinsic invest like limited limits lipid local locations losing lowest maintained medical merged models morphologic neighbor nominal normalized oliver overlap pair pairs particularly patient peter power profile propose pulse pulses quadrature receiving reduces relatively resolution rest restricted selective sensitivity series setting setup shimming short significantly simulations simultaneously specificity spectroscopy spots strength strong suppressed surface systems transceiver transceivers transmitting tumor uniform uniformity unilateral unit vertical volunteer water