Abstract #3640
Accelerated Multiband SSFP Imaging with Controlled Aliasing in Parallel Imaging and integrated-SSFP (CAIPI-iSSFP)
Thomas Boyd Martin 1,2 , Yi Wang 2 , Steen Moeller 3 , Kyung Sung 4 , and Danny JJ. Wang 2
1
Biomedical Physics Interdepartmental
Program, University of California Los Angeles, Los
Angeles, California, United States,
2
Neurology,
University of California Los Angeles, Los Angeles,
California, United States,
3
Center
for Magnetic Resonance Research, University of
Minnesota, Minnesota, United States,
4
Radiological
Sciences, University of California Los Angeles, Los
Angeles, California, United States
CAIPIRINHA is an acceleration technique that uses phase
modulated multiband excitation pulses to simultaneously
acquire slices. Its application in balanced-SSFP
(CAIPI-bSSFP), however, has been limited because the
phase modulation of CAIPIRIHNA results in shifted
off-resonance profiles and subsequent banding artifacts
in simultaneously excited slices. A unique case of an
SSFP-FID sequence allows for removing banding artifacts
while maintaining the unique bSSFP tissue contrast by
averaging the bSSFP signal profile (integrated-SSFP or
iSSFP). This study demonstrates the combination of
CAIPIRINHA and iSSFP techniques (CAIPI-iSSFP) up to 4
times acceleration while removing the banding artifacts
seen in CAIPI-bSSFP imaging.
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