Weighted least-squares pulse-shaping filters with application to ultrasonic signals
The resolution of adjacent surfaces in medical ultrasonic imaging depends on the duration of a reflected echo. By shaping the excitation signal of the transducer, this duration can be decreased. The authors present a method for effective calculation of the excitation pulse by introducing a weighting...
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| Published in | IEEE transactions on ultrasonics, ferroelectrics, and frequency control Vol. 36; no. 1; pp. 109 - 113 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
New York, NY
IEEE
01.01.1989
Institute of Electrical and Electronics Engineers |
| Subjects | |
| Online Access | Get full text |
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| Abstract | The resolution of adjacent surfaces in medical ultrasonic imaging depends on the duration of a reflected echo. By shaping the excitation signal of the transducer, this duration can be decreased. The authors present a method for effective calculation of the excitation pulse by introducing a weighting function that defines the resolution. A class of filter is obtained that includes the least-mean-squares filter, the pure inverse filter, and the matched filter. The method is demonstrated in an application that increases the resolution of an ultrasonic transducer.< > |
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| AbstractList | The resolution of adjacent surfaces in medical ultrasonic imaging depends on the duration of a reflected echo. By shaping the excitation signal of the transducer, this duration can be decreased. The authors present a method for effective calculation of the excitation pulse by introducing a weighting function that defines the resolution. A class of filter is obtained that includes the least-mean-squares filter, the pure inverse filter, and the matched filter. The method is demonstrated in an application that increases the resolution of an ultrasonic transducer. The resolution of adjacent surfaces in medical ultrasonic imaging depends on the duration of a reflected echo. By shaping the excitation signal of the transducer, this duration can be decreased. The authors present a method for effective calculation of the excitation pulse by introducing a weighting function that defines the resolution. A class of filter is obtained that includes the least-mean-squares filter, the pure inverse filter, and the matched filter. The method is demonstrated in an application that increases the resolution of an ultrasonic transducer |
| Author | Mandersson, B. Salomonsson, G. |
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| Cites_doi | 10.1109/T-UFFC.1986.26830 10.1016/0161-7346(85)90003-3 10.1016/0301-5629(81)90039-9 10.1109/T-SU.1978.31001 10.1109/PROC.1975.9798 10.1109/T-SU.1979.31070 |
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| PublicationTitle | IEEE transactions on ultrasonics, ferroelectrics, and frequency control |
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| References | ref7 b rjesson (ref4) 1982 ref3 (ref10) 1978 ref6 ref5 ref2 ref1 mandersson (ref9) 1981 mandersson (ref8) 1979 |
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| Snippet | The resolution of adjacent surfaces in medical ultrasonic imaging depends on the duration of a reflected echo. By shaping the excitation signal of the... |
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| StartPage | 109 |
| SubjectTerms | Acoustics Band pass filters Biomedical imaging Biomedical transducers Exact sciences and technology Fundamental areas of phenomenology (including applications) Image resolution Least squares approximation Matched filters Physics Pulse shaping methods Pulse transformers Signal resolution Ultrasonic transducers Ultrasonics, quantum acoustics, and physical effects of sound |
| Title | Weighted least-squares pulse-shaping filters with application to ultrasonic signals |
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