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Abstract #3577

Towards DWI Guidance of Percutaneous Biopsies using Dual Echo Steady State Sequence: Qualitative Assessment in Liver

Elena A Kaye1, Kristin L Granlund2, Stephen B Solomon2, and Majid Maybody2

1Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, United States, 2Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, United States

Acquisition of a viable tissue sample is critical to success of a biopsy. DWI could help differentiate between viable and necrotic tissue during the procedure, however, EPI-DWI is not suitable in a percutaneous-biopsy setting due to geometric distortions. DW Dual Echo Steady State (DESS) sequence allows acquisition of 3D undistorted DWI images. This study evaluated the application of DW-DESS during an MR-guided liver biopsy in two patients. Using single breath-hold acquisition, DW-DESS image depicted a liver lesion sharper and less distorted than EPI-DWI. DW-DESS also allowed DWI in the presence of a biopsy needle without distortions of EPI.

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