Abstract #3657
Addressing phase errors in quantitative water-fat imaging at 3 T using a time-interleaved multi-echo gradient-echo acquisition
Stefan Ruschke 1 , Holger Eggers 2 , Hendrik Kooijman 3 , Thomas Baum 1 , Marcus Settles 1 , Axel Haase 4 , Ernst J. Rummeny 1 , and Dimitrios C. Karampinos 1
1
Department of Diagnostic and Interventional
Radiology, Technische Universitt Mnchen, Munich,
Bayern, Germany,
2
Philips
Research, Hamburg, Hamburg, Germany,
3
Philips
Healthcare, Hamburg, Hamburg, Germany,
4
Zentralinstitut
fr Medizintechnik, Technische Universitt Mnchen,
Garching, Bayern, Germany
Phase errors are known to cause significant bias in fat
fraction estimation using complex-based water-fat
separation. Time-interleaved multi-echo gradient-echo
(TIMGE) acquisitions (where echoes are time interleaved
and acquired in multiple TRs) are highly desirable at 3
T, as they enable high spatial resolution while
maintaining short echo time steps. However, their phase
error behavior has not been previously addressed. The
present study aims to decompose the phase errors in
TIMGE and propose a methodology to correct for the
effect of phase errors in TIMGE acquisitions.
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