The goal of the proposed work is to develop an ultrasonic transducer and the associated instrumentation which will be capable of making direct determination which will be capable of making direct determinations of ultrasonic intensity and quantitatively related spatial determinations of ultrasonic intensity and quantitatively related spatial and temporal average quantities. The device will be capable of a variety of intensity related measurements (including spatial peak, temporal peak, and spatial peak temporal average) of a wide band width pulse as well as the spatial average temporal average power output. The detection technology is to be based upon the acoustoelectric effect in a composite structure consisting of a semiconductor substrate and deposited piezoelectric layers. This research is an advance in ultrasound dosimetry for monitoring the output of diagnostic imaging systems, for supporting research in new areas such as ultrasound induced hyperthermia, and for quantitative backscatter and attenuation measurements used in medical and industrial applications. This device will provide an economical instrument which can quickly measure the power output of pulsed ultrasound systems.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Small Business Innovation Research Grants (SBIR) - Phase II (R44)
Project #
5R44CA043428-03
Application #
3506558
Study Section
Special Emphasis Panel (SSS (C))
Project Start
1989-08-01
Project End
1992-01-31
Budget Start
1990-08-01
Budget End
1992-01-31
Support Year
3
Fiscal Year
1990
Total Cost
Indirect Cost
Name
W L Gore and Associates, Inc.
Department
Type
DUNS #
002331536
City
Englewood
State
CO
Country
United States
Zip Code
80112