Abstract #4455

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

Pingni Wang¹, Roberta M Strigel^1,2,3, 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 München, 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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