Inventors:
Lauren S. Pflugrath - Seattle WA
Jacques Souquet - Issaquah WA
Blake W. Little - Bothell WA
William R. Ogle - Bothell WA
Larry Greisel - Seattle WA
Justin Coughlin - Seattle WA
Steven G. Danielson - Seattle WA
Assignee:
SonoSite, Inc. - Bothell WA
International Classification:
A61B 800
A61B 806
Abstract:
A hand held ultrasonic instrument is provided in a portable unit which performs both B mode and Doppler imaging. The instrument includes a transducer array mounted in a hand-held enclosure, with an integrated circuit transceiver connected to the elements of the array for the reception of echo signals. A digital signal processing circuit performs both B mode and Doppler signal processing such as filtering, detection and Doppler estimation, as well as advanced functions such as assembly of multiple zone focused scanlines, synthetic aperture formation, depth dependent filtering, speckle reduction, flash suppression, and frame averaging.