Microfabricated ultrasonic transducers with bias polarity...

Details Microfabricated ultrasonic transducers with bias polarity... Microfabricated ultrasonic transducers with bias polarity...

2006-08-08

2006-08-08

Jaworski, Francis J. (Department: 3737)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

Reexamination Certificate

active

07087023

ABSTRACT:
A capacitive microfabricated ultrasonic transducer with control of elevation phase through alternating bias polarity is disclosed. Such control of elevation phase results in simple ultrasonic probes with excellent slice thickness attributes. Furthermore, tight spatial variation of phase results in an effective way to achieve transmit aperture and apodization control. Further still, such capacitive microfabricated ultrasonic transducers can achieve elevation focus without the need of a lossy mechanical lens.

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ISR PCT/US2004/002740 Mailed Jul. 7, 2004.

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