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Abstract #4620

Reducing Artefacts in Inversion Recovery Prepared MRI Caused by Varying Heart Rate Through Real-Time Adaptation of the Inversion Time

Jedrzej Burakiewicz1, Christoph Kolbitsch1, Geoffrey David Charles-Edwards1,2, Tobias Schaeffter1

1Division of Imaging Sciences, King's College London, London, United Kingdom; 2Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom

Rapid changes of heart rate create ghosting artefacts in ECG-triggered inversion recovery prepared MRI. A method is proposed to reduce the artefacts by real-time inversion time adaptation. The correction scheme was theoretically described, simulated, implemented on a scanner and tested using phantom and healthy volunteer brain scans. Variation in signal strength - the cause of artefacts - was reduced from 15% to 2.5%. This suggests a promising, easy to implement correction scheme increasing image quality by reducing artefacts.