Ultrasonic Stimulated Acoustic Emission for Detection of Breast Microcalcifications
Abstract
The purpose of this research is to build an experimental system based on Ultrasound Stimulated Acoustic Emission for in vitro imaging of breast tissue specimens, with the goal of detecting microcalcifications with sufficient accuracy. The scope of this research is to develop a laboratory system and evaluate its performance on phantoms and specimens of human breast tissues containing microcalcifications. The first task of this research, which covers the first year and a part of the second year, focuses on system development and optimization for detection of breast microcalcification. This task includes the development of both the theoretical model and experimental setup required for the method. Our findings include the development of the fundamental theory that describes the relationship between the incident ultrasonic wave and the resulting acoustic emission field in terms of the mechanical parameters of the object. This theory also describes the point spread function, from which we can determine the theoretical spatial resolution of the system. We have also improved our experimental system, by substantially reducing the acoustic noise and minimizing the multipath effect, both critical in reliable detection of microcalcifications in breast tissue. We are now able to detect 26%%m-diameter glass beads in gel.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1999
- Accession Number
- ADA381129
Entities
People
- Mostafa Fatemi