Szczegóły publikacji
Opis bibliograficzny
Local Phase Velocity Imaging (LPVI) as a new technique for shear wave elastography / Matthew W. Urban, Piotr KIJANKA // W: ICA 2019 AACHEN [Dokument elektroniczny] : proceedings of the ICA 2019 and EAA Euroregio : 23rd International Congress on Acoustics, integrating 4th EAA Euroregio 2019 : 9 – 13 September 2019, Aachen, Germany. — Wersja do Windows. — Dane tekstowe. — Germany : German Acoustical Society (Deutsche Gesellschaft für Akustik, DEGA), [2019]. — (International Congress on Acoustics ; ISSN 2226-7808). — e-ISBN: 978-3-939296-15-7. — S. 8218–8224. — Wymagania systemowe: Adobe Reader. — Tryb dostępu: http://pub.dega-akustik.de/ICA2019/data/articles/000156.pdf [2020-02-20]. — Bibliogr. s. 8224, Abstr. — Abstrakt dostępny w: http://app.ica2019.org/konferenz?article=155 [2020-02-20]
Autorzy (2)
- Urban Matthew W.
- AGHKijanka Piotr
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 127694 |
|---|---|
| Data dodania do BaDAP | 2020-03-06 |
| Rok publikacji | 2019 |
| Typ publikacji | materiały konferencyjne (aut.) |
| Otwarty dostęp |  |
| Czasopismo/seria | International Congress on Acoustics |
Abstract
Shear wave elastography is used in many clinical settings to measure the mechanical properties of soft tissues such as the liver, kidney, breast, and thyroid. In most implementations, the shear wave group velocity is measured using time-of-flight methods in the time-domain. However, different factors related to the estimation of the group velocity can cause variation in the results. Factors such as acquisition parameters, processing, tissue inhomogeneities and viscoelasticity can cause these variations. We propose to use methods that rely on phase velocities, shear wave velocities at specific frequencies, to standardize measurements across different clinical applications. We have developed methods for creating maps of phase velocity using Local Phase Velocity Imaging (LPVI). The LPVI method involves directional and wavenumber filtering before applying various steps of Fourier-based operations to obtain localized maps of phase velocity over large bandwidths. We will demonstrate how LPVI works in numerical data, tissue mimicking phantoms, and ex vivo and in vivo tissues such as liver and kidney. The LPVI method has enormous potential because the reconstruction frequency can be controlled, optimized, and standardized for a wide array of clinical applications.
