Abstract #4285

Reduction of Ghosting Due to Respiration Induced B0 Variation in Double Echo Steady State (DESS) Imaging in the Breast with a DC Navigator and Image Entropy Metric

Catherine J Moran¹, Bragi Sveinsson^1,2, Brady Quist², Marcus T Alley¹, Bruce Daniel¹, and Brian A Hargreaves¹

¹Radiology, Stanford University, Stanford, CA, United States, ²Electrical Engineering, Stanford University, Stanford, CA, United States

The double echo steady state (DESS) acquisition has the potential to provide high-resolution and distortion-free T2 and diffusion-weighted images in the breast. Initial investigations of DESS in the breast have been limited by the presence of ghosting artifacts. Respiratory-induced B0 variation is one source of these artifacts. A method utilizing an in-vivo time-varying off-resonance estimate along with an image entropy metric to assess the level of artifact is described and investigated for correction of ghosting due to respiration-induced B0 variation in DESS in the breast.

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