Lamb waves and adaptive beamforming for aberration correction in medical ultrasound imaging
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Autor:innen
Autor:in (Körperschaft)
Publikationsdatum
06.07.2020
Typ der Arbeit
Studiengang
Typ
01A - Beitrag in wissenschaftlicher Zeitschrift
Herausgeber:innen
Herausgeber:in (Körperschaft)
Betreuer:in
Übergeordnetes Werk
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Themenheft
DOI der Originalpublikation
Link
Reihe / Serie
Reihennummer
Jahrgang / Band
68
Ausgabe / Nummer
1
Seiten / Dauer
84-91
Patentnummer
Verlag / Herausgebende Institution
IEEE
Verlagsort / Veranstaltungsort
Auflage
Version
Programmiersprache
Abtretungsempfänger:in
Praxispartner:in/Auftraggeber:in
Zusammenfassung
Phase aberration in transcranial ultrasound imaging (TUI) caused by the human skull leads to an inaccurate image reconstruction. In this article, we present a novel method for estimating the speed of sound and an adaptive beamforming technique for phase aberration correction in a flat polyvinylchloride (PVC) slab as a model for the human skull. First, the speed of sound of the PVC slab is found by extracting the overlapping quasi-longitudinal wave velocities of symmetrical Lamb waves in the frequency-wavenumber domain. Then, the thickness of the plate is determined by the echoes from its front and back side. Next, an adaptive beamforming method is developed, utilizing the measured sound speed map of the imaging medium. Finally, to minimize reverberation artifacts caused by strong scatterers (i.e., needles), a dual probe setup is proposed. In this setup, we image the medium from two opposite directions, and the final image can be the minimum intensity projection of the inherently co-registered images of the opposed probes. Our results confirm that the Lamb wave method estimates the longitudinal speed of the slab with an error of 3.5% and is independent of its shear wave speed. Benefiting from the acquired sound speed map, our adaptive beamformer reduces (in real time) a mislocation error of 3.1, caused by an 8 mm slab, to 0.1 mm. Finally, the dual probe configuration shows 7 dB improvement in removing reverberation artifacts of the needle, at the cost of only 2.4-dB contrast loss. The proposed image formation method can be used, e.g., to monitor deep brain stimulation procedures and localization of the electrode(s) deep inside the brain from two temporal bones on the sides of the human skull.
Schlagwörter
Adaptive beamforming, Deep brain stimulation (DBS), Lamb waves, Sound speed map, Transcranial ultrasound imaging (TUI)
Fachgebiet (DDC)
Veranstaltung
Startdatum der Ausstellung
Enddatum der Ausstellung
Startdatum der Konferenz
Enddatum der Konferenz
Datum der letzten Prüfung
ISBN
ISSN
0885-3010
1525-8955
2373-7840
1525-8955
2373-7840
Sprache
Englisch
Während FHNW Zugehörigkeit erstellt
Ja
Publikationsstatus
Veröffentlicht
Begutachtung
Peer-Review der ganzen Publikation
Open Access-Status
Lizenz
Zitation
MOZAFFARZADEH, Moein, Claudio MINONZIO, Nico DE JONG, Martin VERWEIJ, Simone HEMM-ODE und Verya DAEICHIN, 2020. Lamb waves and adaptive beamforming for aberration correction in medical ultrasound imaging. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 6 Juli 2020. Bd. 68, Nr. 1, S. 84–91. DOI 10.1109/TUFFC.2020.3007345. Verfügbar unter: https://irf.fhnw.ch/handle/11654/33360