Ultrasonic transducer array with apodized elevation focus

Details Ultrasonic transducer array with apodized elevation focus Ultrasonic transducer array with apodized elevation focus

1995-05-22

1996-04-30

Manuel, George

Surgery

Truss

Pad

310334, A61B 800

Patent

active

055115500

ABSTRACT:
An ultrasonic transducer array having a plurality of transducer elements aligned along an array axis in an imaging plane. Each transducer element includes a piezoelectric substrate and further includes a rear electrode applied to the substrate's rear surface and a patterned front electrode applied to the substrate's front surface. A conductive or metalized acoustic matching layer overlays the patterned front electrode. The front electrode is specially patterned along an elevation axis perpendicular to the imaging plane, so as to apodize the emitted ultrasonic beam in the elevation plane. The pattern follows a predetermined tapered weighting function, preferably one that approximates a Hamming weighting function. Slots, oriented parallel with the array axis, are cut into the piezoelectric substrate's front surface, to form a plurality of subelements. This further isolates these portions of the piezoelectric substrate not overlaid by the patterned front electrode, thereby enhancing beam apodization.

REFERENCES:
patent: 3958559 (1976-05-01), Glenn et al.
patent: 3987243 (1976-10-01), Schwartz
patent: 4217684 (1980-08-01), Brisken
patent: 4250474 (1981-02-01), Joseph
patent: 4333065 (1982-06-01), DeVries
patent: 4425525 (1984-01-01), Smith et al.
patent: 4452084 (1984-06-01), Taenzer
patent: 4455630 (1984-06-01), Loonen
patent: 4460841 (1984-07-01), Smith et al.
patent: 4470305 (1984-09-01), O'Donnell
patent: 4471785 (1984-09-01), Wilson et al.
patent: 4518889 (1985-05-01), Hoen
patent: 4550607 (1985-11-01), Maslak et al.
patent: 4700575 (1987-10-01), Geithman et al.
patent: 4784147 (1988-11-01), Moshfeghi
patent: 4809184 (1989-02-01), O'Donnell et al.
patent: 4815047 (1989-03-01), Hart
patent: 4821706 (1989-04-01), Schleicher et al.
patent: 4841492 (1989-06-01), Russell
patent: 4890268 (1989-12-01), Smith et al.
patent: 4917097 (1990-04-01), Proudian et al.
patent: 5068833 (1991-11-01), Lipschutz
patent: 5111695 (1992-05-01), Engeler et al.
patent: 5119342 (1992-06-01), Harrison, Jr. et al.
patent: 5140558 (1992-08-01), Harrison, Jr. et al.
patent: 5187981 (1993-02-01), Chen et al.
patent: 5235986 (1993-08-01), Maslak et al.
patent: 5269307 (1993-12-01), Fife et al.
patent: 5285789 (1994-02-01), Chen et al.

Affiliated with

Also associated with

Rating

Ultrasonic transducer array with apodized elevation focus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ultrasonic transducer array with apodized elevation focus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic transducer array with apodized elevation focus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-622343