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Abstract #2882

Visualizing the Spatial Propagation of Ventilation and Perfusion Signal with Fourier-Decomposition MRI

David Bondesson1,2, Thomas Gaaß1,2, Moritz Schneider1,2, Bernd Kühn3, Olaf Dietrich1, and Julien Dinkel1,2

1Department of Radiology, University Hospital Munich, LMU, Munich, Germany, 2Comprehensive Pneumology Center Munich (CPC-M), Helmholtz Zentrum München, Munich, Germany, 3Siemens healthcare GmbH, Erlangen, Germany

Fourier decomposition (FD) MRI offers functional imaging without exposing patient to contrast agents during free breathing measurements, facilitating the examination of patients with impaired respiration. The presented method visualizes signal progression in the lung by using the phase information of the FD-method and addresses recently raised concern that variable-frequency signals can lead to errors in ventilation and perfusion phase estimates. With the signal progression maps it is further shown how localized signal delays caused by pathologies can be identified.

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