Surgery – Truss – Pad
Patent
1995-11-13
1997-07-15
Jaworski, Francis
Surgery
Truss
Pad
73626, A61B 800
Patent
active
056473656
ABSTRACT:
Apodization parameters for respective transducer elements are generated, for example, at a beam-former, by accessing a select look-up table. An apodization parameter generator circuit includes respective look-up tables for each of multiple window algorithms. The same look-up table is used for a given window algorithm regardless of (i) aperture size; (ii) whether performing transmit or receive beam-forming; and (iii) whether deriving elevation or azimuthal apodization parameters. Each of the multiple tables has a common, fixed number of entries. Such number is at least as big as the number of transducer elements along the longest axis of the host transducer array. For symmetrical tables, the number of entries is halved. A pointer into a look-up table is calculated from the elevational or azimuthal aperture size in elements ("N") and the location of the transducer element of interest ("n") along the aperture.
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patent: 4917097 (1990-04-01), Proudian et al.
patent: 5113706 (1992-05-01), Pittaro
patent: 5549111 (1996-08-01), Wright et al.
Jaworski Francis
Siemens Medical Systems Inc.
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