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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