Maximizing Segmentation Quality of Under-sampled Motion Corrupted Cardiac Cine-MRI Using an End-to-End Deep Learning Model

Ahmed Adly, Ruud Van Sloun, Kerstin Hammernik, Jose Caballero, Daniel Rueckert, Nicola Pezzotti

Keywords: Cardiac Imaging, MRI Acceleration, End-to-end Deep Learning Pipeline, MRI Image Formation and Analysis

Abstract: Assessing cardiac health by measuring the cardiac function, for example using volume and ejection fractions, in cine magnetic resonance imaging is an essential step to assess the severity of cardiovascular diseases. However, motion artifacts caused by the difficulties the patients may have in either breath-holding or remaining still during acquisition, make the estimation of the segmentations required to compute the metrics above difficult, which in turn will undermine the quality of the estimated metrics. In this paper, we propose an end-to-end deep learning model that is optimized for two different tasks: reconstruction and segmentation. This is achieved by implementing a joint model that can achieve high segmentation accuracy while leveraging a fast acquisition by acting on under-sampled k-space data, under the assumption that some random motion occurs during cine cardiac MRI acquisition. Moreover, our joint model is able to reconstruct high quality images coupled with motion correction.

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Paper Type: novel methodological ideas without extensive validation

Primary Subject Area: Segmentation

Secondary Subject Area: Image Acquisition and Reconstruction

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