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Abstract #4112

Implementation of a control system for prospective respiratory motion correction during Cardiovascular MR imaging

Stephen G Jermy1,2, Ali Alhamud1,2, Ian H Burger1, Ntobeko A B Ntusi3, and Ernesta M Meintjes1,2

1Division of Biomedical Engineering, Department of Human Biology, University of Cape Town, Cape Town, South Africa, 2Cape Universities Body Imaging Centre (CUBIC), University of Cape Town, Cape Town, South Africa, 3Department of Medicine, University of Cape Town, Cape Town, South Africa

Navigated free-breathing techniques are commonly used during cardiovascular MR (CMR) acquisitions when breath-holding techniques are not a viable option. Navigated free-breathing techniques with acceptance windows suffer from much longer scan times. A control system using an adaptive Kalman filter was developed to continuously update the slice position throughout the imaging segment during free-breathing CMR, allowing the acquisition to continue throughout the respiratory cycle, regardless of diaphragm position, thereby improving respiratory efficiency and reducing scan times.

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