Title :
Development of a new ultrasonic circular array for endoscopic application in medicine and NDT
Author :
Schwarz, H.-P. ; Welsch, H.J. ; Becker, P. ; Biebinger, M. ; Schmitt, R.M.
Author_Institution :
Dept. of Biomed. Eng., Univ. des Saarland, Ingbert, West Germany
Abstract :
This new device for non-destructive testing (NDT) is a circular array and consists of 100 strip elements. The diameter of the array is 10 mm, and the center frequency is between 3.5 and 7.5 MHz. The mathematical algorithm and monochromatic and broadband calculations of the sound field are shown. The process of manufacturing the array is discussed. Some preliminary ultrasonic pictures obtained from a simple phantom are shown
Keywords :
biomedical ultrasonics; patient diagnosis; ultrasonic materials testing; broadband calculations; circular array; endoscopic application; non-destructive testing; sound field; ultrasonic pictures; Biomedical engineering; Delay effects; Engine cylinders; Engineering drawings; Frequency; Gratings; Imaging phantoms; Manufacturing processes; Medical tests; Pulse shaping methods;
Conference_Titel :
Ultrasonics Symposium, 1989. Proceedings., IEEE 1989
Conference_Location :
Montreal, Que.
DOI :
10.1109/ULTSYM.1989.67073
