Ultrasonic method and device for characterising weak anisotropic media, and ultrasonic probe assembly for such a characterisation device

US11399804B2 · kind B2 · utility

Assignees

• CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE · FR
• Institut National de la Sante et de la Recherche Medicale (INSERM) · FR
• ECOLE SUPERIEURE DE PHYSIQUE ET DE CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS · FR
• UNIVERSITÉ PARIS DIDEROT—PARIS 7 · FR

Inventors

• Mickael Tanter · Paris, FR
• Mathieu Pernot · Paris, FR
• Mathias Fink · Meudon, FR
• Jean-Luc Gennisson · Cergy, FR

Key dates

• Filing date: Jan 12, 2015
• Grant date: Aug 2, 2022
• Expiry date: Dec 21, 2035

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B8/4281
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method for characterizing an anisotropic soft medium (C) including fibers and having an outer surface (1), by observing in different propagation directions, the propagation of a divergent shear wave from a central area (10) in the anisotropic soft medium. A propagation parameter of the shear wave is inferred therefrom in each of the propagation directions, and then a direction of the fibers of the anisotropic soft medium, a rheological elasticity parameter are determined in a direction perpendicular to the fibers and a rheological elasticity parameter in the direction of the fibers.