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Abstract #0760

Feasibility of Free-Breathing Fetal Cine Cardiac MRI based on Doppler Ultrasound, Compressed Sensing and Motion Compensation

Kostas Haris1,2, Erik Hedström1,3, Fabian Kording4,5, Sebastian Bidhult1,6, Frederik Testud7, Katarina Steding-Ehrenborg1,8, Christian Ruprecht4,5, Einar Heiberg1,6, Håkan Arheden1, and Anthony Aletras1,2

1Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Clinical Physiology, Lund, Sweden, 2Laboratory of Computing, Medical Informatics and Biomedical-Imaging Technologies, School of Medicine, Aristotle University, Thessaloniki, Greece, 3Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Diagnostic Radiology, Lund, Sweden, 4Department of Diagnostic and Interventional Radiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany, 5North medical GmbHMartinistraße 52, 20246, Hamburg, Germany, 6Faculty of Engineering, Lund University, Department of Biomedical Engineering, Lund, Sweden, 7Siemens Healthcare AB, Malmö, Sweden, 8Lund University, Department of Health Sciences, Physiotherapy, Lund, Sweden

We investigated the feasibility of free-breathing fetal cine cardiac MRI using Doppler Ultrasound retrospective binning combined with continuous tiny golden angle radial sampling and compressed sensing via the tyGRASP reconstruction method. Motion due to maternal respiration and fetal movement was estimated by registration applied to reconstructed images of low temporal resolution. K-space radial profiles containing motion were either corrected or rejected from the reconstruction process. The reconstruction results demonstrated good image and diagnostic quality showing that the absence of fetal ECG can be bypassed in a computationally efficient way by Doppler Ultrasound even in the presence of motion.

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