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Abstract #4929

Comparison of Radial and Cartesian Acquisitions in Breast MRI for Improved Visualization of the Axilla

Ping Ni Wang1, Roberta M Strigel1,2,3, Andre Fischer4,5, Kang Wang6, Julia V Velikina1, Frank Korosec2, Ty A Cashen6, Kevin M Johnson1, and James H Holmes2

1Department of Medical Physics, University of Wisconsin Madison, Madison, WI, United States, 2Department of Radiology, University of Wisconsin Madison, Madison, WI, United States, 3Carbone Cancer Center, University of Wisconsin Madison, Madison, WI, United States, 4Cardiac Center of Excellence, GE Healthcare, Garching bei München, Germany, 5GE Global Research Europe, Garching bei München, Germany, 6Global MR Applications & Workflow, GE Healthcare, Madison, WI, United States

Dynamic contrast-enhanced (DCE) MRI is being increasingly used in the detection and diagnosis of breast cancer. Cartesian sampling is routinely used however ghosting artifacts caused by cardiac motion are a well known challenge that in some instances can severely obscure the gland tissue, axilla and even known cancer. Radial sampling has an intrinsic advantage for diminishing motion artifacts by averaging low special frequency signals through oversampling of central k-space data. In this study, we demonstrated the feasibility of using a 3D stack-of-stars radial acquisition to provide motion free images of the entire breast region including the axilla.

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