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Verfasst von:Ilicak, Efe [VerfasserIn]   i
 Özdemir, Safa [VerfasserIn]   i
 Zapp, Jascha [VerfasserIn]   i
 Schad, Lothar R. [VerfasserIn]   i
 Zöllner, Frank G. [VerfasserIn]   i
Titel:Dynamic mode decomposition of dynamic MRI for assessment of pulmonary ventilation and perfusion
Titelzusatz:technical note
Verf.angabe:Efe Ilicak, Safa Ozdemir, Jascha Zapp, Lothar R. Schad, Frank G. Zöllner
E-Jahr:2023
Jahr:August 2023
Umfang:9 S.
Illustrationen:Illustrationen
Fussnoten:Online veröffentlicht: 29. März 2023 ; Gesehen am 02.04.2024
Titel Quelle:Enthalten in: Magnetic resonance in medicine
Ort Quelle:New York, NY [u.a.] : Wiley-Liss, 1984
Jahr Quelle:2023
Band/Heft Quelle:90(2023), 2 vom: Aug., Seite 761-769
ISSN Quelle:1522-2594
Abstract:Purpose To introduce dynamic mode decomposition (DMD) as a robust alternative for the assessment of pulmonary functional information from dynamic non-contrast-enhanced acquisitions. Methods Pulmonary fractional ventilation and normalized perfusion maps were obtained using DMD from simulated phantoms as well as in vivo dynamic acquisitions of healthy volunteers at 1.5T. The performance of DMD was compared with conventional Fourier decomposition (FD) and matrix pencil (MP) methods in estimating functional map values. The proposed method was evaluated based on estimated signal amplitude in functional maps across varying number of measurements. Results Quantitative assessments performed on phantoms and in vivo measurements indicate that DMD is capable of successfully obtaining pulmonary functional maps. Specifically, compared to FD and MP methods, DMD is able to reduce variations in estimated amplitudes across different number of measurements. This improvement is evident in the fractional ventilation and normalized perfusion maps obtain from phantom simulations with frequency variations and noise, as well as in the maps obtained from in vivo measurements. Conclusions A robust method for accurately estimating pulmonary ventilation and perfusion related signal changes in dynamic acquisitions is presented. The proposed method uses DMD to obtain functional maps reliably, while reducing amplitude variations caused by differences in number of measurements.
DOI:doi:10.1002/mrm.29656
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

kostenfrei: Volltext: https://doi.org/10.1002/mrm.29656
 kostenfrei: Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/mrm.29656
 DOI: https://doi.org/10.1002/mrm.29656
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:dynamic mode decomposition
 Fourier decomposition
 lung
 lung function
 matrix pencil
 pulmonary MRI
K10plus-PPN:188470123X
Verknüpfungen:→ Zeitschrift

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