Title :
Devices for ultrasound field parameter measurements
Author_Institution :
Dept. of Electr. & Comput. Eng., Drexel Univ., Philadelphia, PA, USA
Abstract :
Practical aspects of ultrasound field measurements and instrumentation needed to adequately characterize acoustic output of ultrasound imaging systems are discussed. Calibrated piezoelectric hydrophone probes with active elements made of piezoelectric polymer, polivinylidene fluoride (PVDF) and well suited for both temporal and spatial characterization of the field are described together with computerized data acquisition systems. Fundamental limitations of such measurement systems are also discussed and possible improvement in measurement techniques by using fiber optic sensors is pointed out. The basic characteristics of other field measurement devices such as radiation force balance, calorimeters, and thermocouples are also presented
Keywords :
acoustic intensity measurement; biomedical equipment; biomedical ultrasonics; data acquisition; hydrophones; piezoelectric transducers; ultrasonic measurement; acoustic output; active elements; calibrated probes; calorimeters; computerized data acquisition systems; fiber optic sensors; piezoelectric hydrophone probes; piezoelectric polymer; polivinylidene fluoride; radiation force balance; thermocouples; ultrasound field parameter measurements; ultrasound imaging systems; Acoustic devices; Acoustic imaging; Acoustic measurements; Force measurement; Instruments; Optical imaging; Probes; Sonar equipment; Ultrasonic imaging; Ultrasonic variables measurement;
Conference_Titel :
Biomedical Engineering Days, 1992., Proceedings of the 1992 International
Conference_Location :
Istanbul
Print_ISBN :
0-7803-0743-7
DOI :
10.1109/IBED.1992.247077
