Method and device for localization and focusing of acoustic waves in tissues

US5092336A · kind A · utility

Assignee

• Universite Paris VII-Bureau de la Valorisation et de Relations Industrielle · FR

Inventor

• Mathias Fink · Meudon, FR

Key dates

• Filing date: Feb 8, 1990
• Grant date: Mar 3, 1992
• Expiry date: Feb 8, 2010

Classification

• Technology area (CPC G): Physics
• CPC primary: G10K2200/10
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

For focussing an ultrasound beam delivered by a transducer array on a reflective target in a medium, for instance in organic tissues, the zone including the target is illuminated with an unfocussing acoustic beam. The shapes and position of echo signals delivered by electro-acoustic transducers of a regular array are individually stored; the distribution in time and the shapes of the echo signals for obtaining reversed signals are reversed and the reversed signals are applied to the respective transdcuers of the array.