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Abstract #1742

B1 Homogeneity in Breast MRI at 3T with Dual-Source Radiofrequency Transmission: An Intraindividual Comparison with 1.5T

Guillaume Gilbert1, 2, Isabelle Trop1, Marko K. Ivancevic3, Gilles Beaudoin1

1Department of Radiology, Centre Hospitalier de l'Universit de Montral, Montreal, Quebec, Canada; 2MR Clinical Science, Philips Healthcare, Montreal, Quebec, Canada; 3MR Clinical Science, Philips Healthcare, Best, Netherlands

B1 inhomogeneity is a known issue when performing breast MRI at 3T using standard quadrature transmission. Consequently, parallel transmission was proposed as way to improve B1 homogeneity. The aim of this study was to evaluate and compare in a cohort of women undergoing both 1.5T and 3T breast MRI the B1 homogeneity achieved at 1.5 and 3T, and for both quadrature and dual-source parallel transmission at 3T. It was found that 3T MRI with dual-source parallel transmission offers an overall B1 homogeneity for breast imaging that is better than that obtained at 1.5T and at 3T with quadrature transmission.