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Abstract #3502

Compressed sensing for motion-robust real-time fetal cardiac imaging

Nicholas Rubert1, Quin Lu2, Gaurav Jategaonkar1, and Luis Goncalves1,3
1Radiology, Phoenix Children's Hospital, Phoenix, AZ, United States, 2Philips, Best, Netherlands, 3University of Arizona, Phoenix, AZ, United States


We examined undersampled real-time bSSFP reconstructions for fetal cardiac imaging. Two compressed sensing reconstructions, ICTGV and L plus S, were compared to k-t SENSE with respect to spatial and temporal blurring with and without fetal motion. Results with a digital fetal cardiac MRI phantom demonstrated ICTGV was able to capture expansion and contraction of the fetal heart even during periods of fetal motion while k-t SENSE and L plus S were not. Digital phantom results were confirmed on a 1.5T MRI scanner with implementation of ICTGV and acquisitions demonstrating pulsation of the fetal heart during periods of fetal motion.

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