Correction of Breathing-Induced Artefacts in High-Field Brain MRI using Concurrent Field Monitoring

Johanna Vannesj¹, David Brunner¹, Christoph Barmet¹, Klaas Paul Pruessmann¹

Artefacts in anatomical brain images stemming from field fluctuations caused by breathing have previously been reported, and a navigator-based correction scheme has been shown. In this work, concurrent field monitoring was used to observe field shifts correlated with breathing, and to correct for breathing-related artefacts by including the monitored field evolutions in the image reconstruction. One advantage of the field monitoring approach, is that no alteration or extension of the imaging sequence is required.