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., Saarland Univ., St. Ingbert, West Germany
Abstract :
The authors describe a novel ultrasonic array for endoscopic application in medicine and NDT (nondestructive testing). This device is a circular array and consists of 100 strip elements. The diameter of this array is 10 mm, and the frequency is about 5.0 MHz. With this circular array the sound beam can be steered 360°, and radarlike pictures obtained. The mathematical algorithm, and monochromatic and broadband calculations of the sound field are given. In addition, the manufacturing process is discussed. It is noted that this probe is applicable for medical rectal and esophageal diagnoses or NDT tube inspection
Keywords :
acoustic arrays; biomedical ultrasonics; ultrasonic materials testing; ultrasonic transducers; 5 MHz; NDT; broadband; endoscopic application; esophageal; medicine; monochromatic; nondestructive testing; rectal; ultrasonic circular array; Acoustic beams; Apertures; Biomedical engineering; Delay effects; Frequency; Geometry; Medical tests; Pulse shaping methods; Radar; Software packages;
Conference_Titel :
Ultrasonics Symposium, 1988. Proceedings., IEEE 1988
Conference_Location :
Chicago, IL
DOI :
10.1109/ULTSYM.1988.49456
