Ultrasonic color imaging method and its apparatus characterizing ultra-fine structures and continuously distributed physical conditions

Abstract

This invention discloses methods and apparatus for ultrasonic color imaging that characterizes ultra-fine structures and distributional physical conditions within the target under inspection. The disclosed complementarily incorporates information arising from a plurality of repeated sound trips forced by repeated reflections of exterior and interior interfaces of target, and expresses the information into an image segment representing the main path that ultrasonic signals traveled within the target. The image produced is substantially more discriminative, descriptive, and position-sensitive to both acoustic interfaces and distributional acoustic characteristics of the target. The invention is especially useful for thin sheet targets most vulnerable to both non-continuous and continuous interior defects. The continuous interior conditions and effects of ultra-thin layered structures, that traditional ultrasonic inspection has been unable to express, are effectively expressed by linking their effects of deforming the waveform of passing ultrasonic signals to color image details.

Description

technical field [0001] The invention relates to non-destructive testing for medical and industrial materials, in particular to ultrasonic color imaging for detection and characterization of biological tissues and industrial materials. Background technique [0002] Ultrasonic waves are widely used in medical diagnosis and quality inspection of industrial materials because they can freely travel through opaque media that cannot be reached by human vision. When the advancing ultrasonic signal hits the interface of two different materials, part of the signal energy passes through the interface and enters the material in front, and the rest of the energy is reflected by the interface and returns to the original material, generating a detectable echo that exposes the existence of the interface. The acoustic interface that can reflect ultrasonic waves and generate echoes includes the external boundary of the measured object and internal material mutations, such as layered structure...

AI Technical Summary

Problems solved by technology

Second, the vision has an unparalleled sense of space

Unfortunately, these extremely valuable information resources are not effectively utilized in traditional ultrasonic testing techniques

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