Title :
A multi-row transducer array for adaptive imaging
Author :
Wildes, D.G. ; Durocher, K.M. ; Hennessy, W.A. ; Lewandowsk, R.S. ; Rigby, K.W. ; Sleeter, J.K. ; Smith, L.S. ; Sogoian, G.C. ; Venkataramani, V.S. ; Bhave, A.A. ; David, J.J. ; Keres, L.J. ; Lillegard, G.A. ; Lu, X.M. ; Miller, D.P. ; Potrykus, G.L. ; St
Author_Institution :
GE Corp. Res. & Dev., Niskayuna, NY, USA
Abstract :
Commercial arrays for medical imaging do not adequately sample the spatial variation of the speed of sound in human abdominal wall tissue. These arrays sense only the average properties of a region of tissue and are unable to achieve significant correction of aberrations. The authors have designed and built a multi-row 1.75 D transducer to support the development of algorithms for adaptive imaging. Electrical connections are made with a two-layer flexible printed circuit. A programmable multiplexer allows the use of large 1.25 D apertures for maximum sensitivity or small 1.75 D apertures for fine spatial sampling. Measurements made with a model aberration demonstrate that a multi-row probe is necessary for adaptive imaging
Keywords :
biological tissues; biomedical transducers; biomedical ultrasonics; ultrasonic transducer arrays; ultrasonic velocity; adaptive imaging; algorithms development; commercial arrays; electrical connections; fine spatial sampling; human abdominal wall tissue; maximum sensitivity apertures; medical diagnostic imaging; model aberration; multirow transducer array; programmable multiplexer; sound speed spatial variation sampling; tissue region average properties; two-layer flexible printed circuit; Abdomen; Acoustic transducers; Adaptive arrays; Algorithm design and analysis; Apertures; Biomedical imaging; Biomedical transducers; Flexible printed circuits; Humans; Multiplexing;
Conference_Titel :
Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE
Conference_Location :
Sendai
Print_ISBN :
0-7803-4095-7
DOI :
10.1109/ULTSYM.1998.765307
