Title :
Measurement and dynamic display of acoustic wave pulses
Author :
Lu, J.Y. ; Kinter, T. ; Greenleaf, J.F.
Author_Institution :
Mayo Clinic/Found., Rochester, MN, USA
Abstract :
To evaluate and improve the longitudinal and lateral resolution of an ultrasonic transducer in pulse-echo imaging, it is useful to visualize how the ultrasonic pulse travels in space. A method for measuring and dynamically displaying the traveling acoustic wave pulses is developed. A half-millimeter hydrophone was used to scan two-dimensional planes through the beams produced by three types of transducers: commercial PZT, air-backed PZT, and PZT ceramic/polymer composite. The signals were digitized and stored in two- and three-dimensional formats. The ANALYZE software package was used to produce movies of the traveling wave as well as the two- and three-dimensional depictions of the pulse at various points in space and time
Keywords :
acoustic signal processing; hydrophones; ultrasonic measurement; ultrasonic transducers; ANALYZE software package; PZT ceramic/polymer composite; acoustic wave pulses; air-backed PZT; commercial PZT; dynamic display; half-millimeter hydrophone; pulse-echo imaging; traveling wave; two-dimensional planes; ultrasonic pulse; ultrasonic transducer; Acoustic imaging; Acoustic measurements; Acoustic pulses; Acoustic waves; Displays; Image resolution; Pulse measurements; Space exploration; Ultrasonic transducers; Ultrasonic variables measurement;
Conference_Titel :
Ultrasonics Symposium, 1989. Proceedings., IEEE 1989
Conference_Location :
Montreal, Que.
DOI :
10.1109/ULTSYM.1989.67070