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Abstract #1739

Application of Zoomed EPI and PTX for Breast Diffusion Weighted Imaging.

Christian Geppert1, Christopher B. Glielmi2, Ryan Brown3, Linda Moy3, Josef Pfeuffer4, Eric E. Sigmund3

1Siemens Medical Systems, New York, NY, United States; 2Siemens Medical Solutions, New York, NY, United States; 3NYU Langone Medical Center, New York, NY, United States; 4Siemens Healthcare, Erlangen, By, Germany

In breast DWI, typically EPI based methods are used which are prone to characteristic artifacts, such as spatial distortion due to gradient nonlinearity or eddy currents. This study demonstrates the use of 2D-selective RF excitation from a 2-channel parallel transmit system (pTX) to a) overcome these distortions and b) allow the user to restrict the acquisition volume to the breast alone (zoomed EPI).

Keywords

accuracy acquisition allow alone alternative anatomic appearance application around artifacts assessment axial balance bands become biopsy blurring breast brown burden cancer channel characteristic clear clinical clinically coarser coil combined commonly comparable conclusively dataset demand described detailed diagnostic diffusion displayed distortion distortions eddy enables encode enhancement enhancing evaluation even excitation expense frequently furthermore good gradient healthy impact improvement invested investigations length lesion limits mass matrix measured medical mismatch mitigate mode moderate monitoring morphologic needed nonlinearity obvious original overcome overlay parallel penalty planar planned planning porter position potential prescribed promising prone protocol protocols prototype prove pulse quantitative radiology readout reasons recent reconstruction reduced reduction registration resolution respect respectively response restrict scanned segmented selective shortening shot slices slightly solutions spatial stop strong subjects sufficient suggest supported suppressed suppression susceptibility system trace train transmit treatment typically user version vibe volume volunteer years zoomed