Abstract #0760

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

Kostas Haris^1,2, Erik Hedström^1,3, Fabian Kording^4,5, Sebastian Bidhult^1,6, Frederik Testud⁷, Katarina Steding-Ehrenborg^1,8, Christian Ruprecht^4,5, Einar Heiberg^1,6, Håkan Arheden¹, and Anthony Aletras^1,2

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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