Abstract: An extended field of view ultrasonic imaging system allows the direction of scanhead motion to be reversed to reacquire the desired image plane or patient anatomy when the movement of the scanhead departs from the desired path of travel.
Type:
Grant
Filed:
June 30, 1999
Date of Patent:
October 9, 2001
Assignee:
ATL Ultrasound
Inventors:
Roy B. Peterson, Thomas Martin Wissler, Lars Jonas Olsson
Abstract: A medical diagnostic ultrasonic imaging method and system subdivide the transmit aperture into two or more subapertures, each subaperture having at least four adjacent transducer elements. The subapertures are phased differently with respect to one another to selectively reduce either fundamental components or harmonic components of echoes from tissue. These techniques can be used to improve contrast agent harmonic imaging as well as tissue harmonic imaging, depending upon the phase shift selected.
Type:
Grant
Filed:
August 8, 2000
Date of Patent:
April 24, 2001
Assignee:
Acuson Corporation
Inventors:
Bhaskar S. Ramamurthy, Charles Bradley, Ken Sawatari, Danhua Zhao, Stuart L. Carp, Stirling S. Dodd, David J. Hedberg, Samuel H. Maslak, Daniel E. Need
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