Method for processing ultrasonic echo signals of both directionally reflecting as well as non-directionally scattering objects, particularly for ultrasonic image processing in the field of substance or tissue investigation

US4407163A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Eckart Hundt · Haar, DE
• Elmar Trautenberg · Ergolding, DE

Key dates

• Filing date: May 15, 1981
• Grant date: Oct 4, 1983
• Expiry date: May 15, 2001

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S7/52057
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In an exemplary embodiment, the processing techniques of computerized x-ray tomography are applied to improve resolution transverse to the depth direction, for example with the use of compound ultrasonic scanning. In this way, an improved preliminary image for representing non-directionally scattering image points is attained. The ultrasonic echo signals are also processed to provide a preliminary image based predominantly or exclusively on directionally reflecting image points. The respective preliminary images for each image point or point region are then suitably combined to provide a stored ultrasonic image capable of display of the scanned region of improved accuracy, resolution, and freedom from noise.