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Abstract #0196

Diffusion Weighted Imaging of the Breast at 7T Ready for Clinical Application?

Olgica Zaric1, Katja Pinker, Stephan Gruber1, David Porter2, Thomas Helbich, Siegfried Trattnig1, Wolfgang Bogner1, 3

1MR Centre of Excellence, Department of Radiology, Medical University of Vienna, Wien, Austria; 2MR PLM AW Neurology, Siemens Healthcare , Erlangen, Germany, Germany; 3Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States

This work presents the first clinical evidence that reproducible high-quality diffusion weighted imaging (DWI) of the breast can be performed at 7T in a large patient population. DWI with sub-millimeter in-plane resolution was obtained in 31 consecutive patients with histopathologically verified breast lesions. A significant reduction of imaging artifacts (i.e., geometric distortions, image blurring by a factor of 6.9) was achieved by combining readout-segmented echo planar imaging, parallel imaging, and additional B1-insensitive fat suppression. DWI of the breast, performed at 7T, with submillimeter inplane resolution provided exceptional image quality leading to excellent differentiation of benign and malignant breast lesions.

Keywords

accuracy achieved additionally amount anatomical apparent application approval artifacts audience automatic available basis benign bilateral biomedical blurring border breast channel chest clinical close coil combination combined comparable contrast correcting correlation coverage curve delineation derived deviation diagnostic diagram differentiation diffusion distortions double drawn efficient enable enhanced evaluate evaluated evaluation even evidence examinations examined excellence excellent exceptional excluded feasibility field fields frequency future general geometric glandular good grade gradient identical illustrates improve improved improvement in vivo included independently informed inhibited inhomogeneities inhomogeneous invest lead lesion lesions limits malignant maps matrix measured medical minimal near necrotic neurology noise normally optimize overcomes parallel particularly patient patients phantom phantoms porter preliminary protocol quality quantified radiology reached readout ready reduced reproducible resolution respectively restrictions sample saturation scanner schema school segmented segments selective semi sensitivity shimming shorter shot significantly since slices spacing spatial spatially stark stronger subjects suppression tanner target technology threshold tissue tuned types unilateral verified visually written years