Title :
Dynamic focussing and ultrasonic imaging
Author :
Martin, M. ; Piquard, J.F.
Author_Institution :
C.E.N.G., LETI/MCTE, Grenoble Cedex
Abstract :
Ultrasonic imaging in B echography requires high resolution over the entire scanning zone. Phased array transducers in conjunction with analogical shift registers (CCD) allow sector scanning and dynamic focussing. Working within this framework a measurement instrument has been devised to evaluate the influence of the different parameters on the image.
Keywords :
Acoustic beams; Acoustic transducers; Focusing; Image converters; Image resolution; Lenses; Phased arrays; Probes; Ultrasonic imaging; Wideband;
Conference_Titel :
Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '82.
DOI :
10.1109/ICASSP.1982.1171476
