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Abstract #4455

Comparison of Radial and Cartesian Acquisitions for Visualization of the Axilla in Breast MRI: Reader Study

Pingni Wang1, Roberta M Strigel1,2,3, Makiko Kawai2, Ty A Cashen4, Julia V Velikina1, Kang Wang4, Frank Korosec2, Urvi A Tailor2, Jillian A Karow2, Kevin M Johnson1, Andre Fischer5, 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, 4Global MR Applications & Workflow, GE Healthcare, Madison, WI, United States, 5Global Research Organisation, GE Healthcare, Garching bei M√ľnchen, Germany

Dynamic contrast-enhanced (DCE) MRI using conventional Cartesian sampling is used in routine clinical practice due to its high sensitivity for breast cancer. However, ghosting artifacts caused by cardiac motion can obscure the axilla, making interpretation of this area more difficult and potentially obscuring findings. Radial acquisitions are less motion sensitive due to more frequent sampling of the center of k-space and prior work has suggested these methods for breast MRI. In this study, we report results from a reader study to assess image quality of a 3D stack-of-stars radial acquisition compared with Cartesian imaging for breast MRI.

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