Title :
Focusing and scanning of ultrasound by spatial amplitude modulation
Author_Institution :
Unviersity of Houston, Houston, TX
Abstract :
Spatial amplitude modulation (SAM) is proposed as an alternative to spatial phase modulation (SPM) techniques currently emplayed in most ultrasonic imaging systems. A simple implementation of a SAM-based imaging system using an optoacoustic transducer (OAT) is presented.
Keywords :
Amplitude modulation; Electrodes; Focusing; Fresnel reflection; Optical imaging; Phase modulation; Photoconductivity; Scanning probe microscopy; Ultrasonic imaging; Ultrasonic transducers;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/PROC.1983.12707
