Title :
Adaptive ultrasound imaging systems using large, two-dimensional, conformal arrays
Author :
Li, Pai-Chi ; Krishnan, Sriram ; Donnell, M.O.
fDate :
Oct. 31 1994-Nov. 3 1994
Abstract :
Very large, two-dimensional, conformal arrays have been proposed to improve ultrasound´s ability to detect cancer. These arrays are undersampled in elevation to reduce total channel number while maintaining full three-dimensional focusing capability. Due to limited acoustic windows into the body, however, a fraction of the aperture might be blocked and produce undesired imaging artifacts. In addition, tissue inhomogeneities and array conformality result in time-of-flight errors and further degrade beam quality. To fully realize the clinical potential of ultrasound imaging, these artifacts must be removed. In this paper, we present recent progress on the applications of advanced signal processing techniques to both blocked element compensation and phase aberration correction problems. With the success of these techniques, it was shown that large, two-dimensional, anisotropic, conformal arrays hold the promise to greatly improve ultrasound image quality
Keywords :
acoustic correlation; adaptive signal processing; biomedical ultrasonics; medical image processing; ultrasonic focusing; ultrasonic transducer arrays; adaptive ultrasound imaging systems; advanced signal processing techniques; beam quality degradation; blocked element compensation; cancer detection; clinical potential; imaging artifacts; large two-dimensional anisotropic conformal arrays; large two-dimensional conformal arrays; limited acoustic windows; phase aberration correction; three-dimensional focusing capability; time-of-flight errors; tissue inhomogeneities; total channel number; Acoustic arrays; Acoustic correlators; Adaptive signal processing; Biological tissues; Biomedical acoustic imaging; Biomedical signal processing; Biomedical transducers; Cancer; Phased arrays;
Conference_Titel :
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location :
Cannes, France
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1994.401902