Systeme und Verfahren zur Schätzung der Geschwindigkeit von Starren Strukturen in Gegenwart von Speckle- und Bewegungsartefakten

Details

Veröffentlichungs-Nr.

EP4711706

Anmeldetag

17. September 2024

Veröffentlichung

18. März 2026

Rechtsraum

EP

IPC

(ADAMSON ROBERT et al.)

Abstract

Systems and methods are provided for performing Doppler (phase-sensitive) optical coherence tomographic vibrometry measurements involving the vibrometric response of a rigid structure to an acoustic stimulus, such that the impact of speckle noise on a calculated vibrometric measure is reduced. Detected signals are processed to determine a depth range associated with the rigid structure, and to provide sampled time-dependent phase data encoded with the vibratory response of the rigid structure during application of the acoustic stimulus. The sampled time-dependent phase profile is processed to generate a vibrometric measure characterizing the rigid structure, based on non-uniformly-weighted contributions from one or more subregions within the depth region associated with the rigid structure (and optionally one or more time windows). The contribution from each subregion may be dependent on a depth-domain intensity measure associated with the subregion, where each subregion may be sufficiently small to encompass speckle-induced spatially-dependent changes.

Anmelder

Firma

Carl Zeiss Meditec AG

Land

🇩🇪 Deutschland