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Abstract #2583

Variability of flow parameters when subjected to changes of MR acquisitions parameters in 4D flow MRI using a realistic thoracic aortic phantom.

Cristian Montalba1, Jesus Urbina1,2, Julio Sotelo1,3, Marcelo Andia1,4, Cristian Tejos1,3, Pablo Irrarazaval1,3, Israel Valverde5,6, and Sergio Uribe1,4

1Biomedical Imaging Center, Pontificia Universidad Católica de Chile, Santiago, Chile, 2School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile, 3Electrical Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile, 4Radiology Department, Pontificia Universidad Católica de Chile, Santiago, Chile, 5Institute of Biomedicine of Seville, Universidad De Sevilla, Seville, Spain, 6Cardiology Unit, Hospital Virgen del Rocio, Universidad de Sevilla, Seville, Spain

4D flow is a MRI technique characterized by long scanning times. Because of that, it is difficult to study the variability of flow parameters when subjected to changes of the MR parameters. The purpose of this work is to study the variability of different flow parameters due to changes of spatial and temporal resolutions in 4D flow acquisitions through controlled experiments using a realistic normal adult thoracic aortic phantom. We conclude that changing the spatial and temporal resolutions in the 4D flow imaging greatly affects different flow parameters with induced errors of up to 23.9%.

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