Abstract #2548

Immobilization of Breast Tissue Using Small Beads for MR-Guided Breast Interventions

Matthew Smith¹, Catherine Moran¹, Xu Zhai¹, Ray Harter², Frederick Kelcz³, Sean Fain^1,3

¹Medical Physics, University of Wisconsin, Madison, WI, USA; ²Marvel Medtech LLC, Madison, WI, USA; ³Radiology, University of Wisconsin, Madison, WI, USA

Biopsy or therapy needles distort the breast upon insertion and cause the internal structures to move, which can shift the target from its original position. Conventional methods of stabilizing the breast during an MR-guided intervention use a planar approach in which the breast is compressed between two parallel stabilization plates, causing the tissue to distort into an unnatural form. We present a novel method that can provide uniform stabilization pressure to the breast surface using small beads. This method preserves the natural breast shape and allows a needle insertion from any angle.