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.
