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Abstract #4339

RF-Induced Potential False-Negative Lesion in Breast T2-weighted MRI at 3T: Exploration of a Single-Channel kT-Points Solution

Raphael Tomi-Tricot1, Vincent Gras1, Thu Ha Dao2, Antoine Perrot2, Franck Mauconduit3, Nicolas Boulant1, Pierre Zerbib2, Alain Rahmouni2,4, Alexandre Vignaud1, Alain Luciani2,4,5, and Alexis Amadon1

1CEA/DRF/Joliot/NeuroSpin/UNIRS, Gif-sur-Yvette, France, 2Department of Radiology, AP-HP, CHU Henri Mondor, Créteil, France, 3Siemens Healthcare SAS, Saint-Denis, France, 4Université Paris-Est Créteil Val-de-Marne, Créteil, France, 5INSERM Unité U955, Equipe 18, Créteil, France

Breast MRI can benefit from the improved signal-to-noise ratio brought by high-field systems to achieve finer spatial or temporal resolutions. However, dielectric resonance associated with the shorter RF wavelength provokes inhomogeneous excitation in the tissues. In this work, it was shown that such artefacts can induce hyperintensity in T2-weighted images, thus potentially misleading clinicians into excluding malignancy in a lesion. A solution is proposed to reduce the RF artefact on 3D T2w acquisitions using single-transmit-channel kT-points, which could be used on any 3T scanner.

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