Combining 4D Flow MRI and Complex Networks Theory to Characterize the Hemodynamic Heterogeneity in Dilated and Non-dilated Human Ascending Aortas
© 2021. The Author(s)..
Motivated by the evidence that the onset and progression of the aneurysm of the ascending aorta (AAo) is intertwined with an adverse hemodynamic environment, the present study characterized in vivo the hemodynamic spatiotemporal complexity and organization in human aortas, with and without dilated AAo, exploring the relations with clinically relevant hemodynamic and geometric parameters. The Complex Networks (CNs) theory was applied for the first time to 4D flow magnetic resonance imaging (MRI) velocity data of ten patients, five of them presenting with AAo dilation. The time-histories along the cardiac cycle of velocity-based quantities were used to build correlation-based CNs. The CNs approach succeeded in capturing large-scale coherent flow features, delimiting flow separation and recirculation regions. CNs metrics highlighted that an increasing AAo dilation (expressed in terms of the ratio between the maximum AAo and aortic root diameter) disrupts the correlation in forward flow reducing the correlation persistence length, while preserving the spatiotemporal homogeneity of secondary flows. The application of CNs to in vivo 4D MRI data holds promise for a mechanistic understanding of the spatiotemporal complexity and organization of aortic flows, opening possibilities for the integration of in vivo quantitative hemodynamic information into risk stratification and classification criteria.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:49 |
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| Enthalten in: |
Annals of biomedical engineering - 49(2021), 9 vom: 02. Sept., Seite 2441-2453 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Calò, Karol [VerfasserIn] |
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| Links: |
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| Themen: |
Aortic dilation |
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| Anmerkungen: |
Date Completed 25.01.2022 Date Revised 18.02.2022 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1007/s10439-021-02798-9 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM326284974 |
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| 500 | |a Date Revised 18.02.2022 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2021. The Author(s). | ||
| 520 | |a Motivated by the evidence that the onset and progression of the aneurysm of the ascending aorta (AAo) is intertwined with an adverse hemodynamic environment, the present study characterized in vivo the hemodynamic spatiotemporal complexity and organization in human aortas, with and without dilated AAo, exploring the relations with clinically relevant hemodynamic and geometric parameters. The Complex Networks (CNs) theory was applied for the first time to 4D flow magnetic resonance imaging (MRI) velocity data of ten patients, five of them presenting with AAo dilation. The time-histories along the cardiac cycle of velocity-based quantities were used to build correlation-based CNs. The CNs approach succeeded in capturing large-scale coherent flow features, delimiting flow separation and recirculation regions. CNs metrics highlighted that an increasing AAo dilation (expressed in terms of the ratio between the maximum AAo and aortic root diameter) disrupts the correlation in forward flow reducing the correlation persistence length, while preserving the spatiotemporal homogeneity of secondary flows. The application of CNs to in vivo 4D MRI data holds promise for a mechanistic understanding of the spatiotemporal complexity and organization of aortic flows, opening possibilities for the integration of in vivo quantitative hemodynamic information into risk stratification and classification criteria | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Aortic dilation | |
| 650 | 4 | |a Ascending aorta aneurysm | |
| 650 | 4 | |a Magnetic resonance imaging | |
| 650 | 4 | |a Network science | |
| 650 | 4 | |a Spatiotemporal analysis | |
| 700 | 1 | |a Gallo, Diego |e verfasserin |4 aut | |
| 700 | 1 | |a Guala, Andrea |e verfasserin |4 aut | |
| 700 | 1 | |a Rodriguez Palomares, Jose |e verfasserin |4 aut | |
| 700 | 1 | |a Scarsoglio, Stefania |e verfasserin |4 aut | |
| 700 | 1 | |a Ridolfi, Luca |e verfasserin |4 aut | |
| 700 | 1 | |a Morbiducci, Umberto |e verfasserin |4 aut | |
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