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Abstract #0667

Prospective Phase Correction for Diffusion-Weighted SSFP Imaging In Vivo

Rafael O'Halloran 1 , Murat Aksoy 1 , Eric Aboussouan 1 , Eric Peterson 1 , Anh Van 1,2 , and Roland Bammer 1

1 Radiology, Stanford University, Stanford, CA, United States, 2 Zentralinstitut fr Medizintechnik, Technische Universitt Mnchen, Munich, Germany

While single-shot EPI remains the workhorse of clinical diffusion-weighted imaging, diffusion-weighted steady state free precession (DW-SSFP) imaging has some attractive properties as acquisitions are pushed to higher-resolution. The price of imaging in the steady state, however, is the undesirable propagation of uncorrected phase errors into the phase coherence pathway tree leading to loss of signal and contrast. The only way to combat this effect is to prospectively correct the phase. In this work an approach to prospectively correct rigid-body-motion induced phase errors in real time is presented and demonstrated to be effective in human volunteers.

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