Abstract #4112

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

Stephen G Jermy^1,2, Ali Alhamud^1,2, Ian H Burger¹, Ntobeko A B Ntusi³, and Ernesta M Meintjes^1,2

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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