Invention Grant
US5913823A Ultrasound imaging method and system for transmit signal generation for
an ultrasonic imaging system capable of harmonic imaging
失效
用于能够进行谐波成像的超声波成像系统的超声成像方法和发射信号发生系统
- Patent Title: Ultrasound imaging method and system for transmit signal generation for an ultrasonic imaging system capable of harmonic imaging
- Patent Title (中): 用于能够进行谐波成像的超声波成像系统的超声成像方法和发射信号发生系统
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Application No.: US893150Application Date: 1997-07-15
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Publication No.: US5913823APublication Date: 1999-06-22
- Inventor: David J. Hedberg , Stuart L. Carp , Stirling S. Dodd , Samual H. Maslak , Bhaskar S. Ramamurthy , Daniel E. Need , John A. Hossack
- Applicant: David J. Hedberg , Stuart L. Carp , Stirling S. Dodd , Samual H. Maslak , Bhaskar S. Ramamurthy , Daniel E. Need , John A. Hossack
- Applicant Address: CA Mountain View
- Assignee: Acuson Corporation
- Current Assignee: Acuson Corporation
- Current Assignee Address: CA Mountain View
- Main IPC: A61B8/00
- IPC: A61B8/00 ; A61B8/08 ; G01S7/52
Abstract:
An improvement to the method for harmonic imaging including the steps of (a) transmitting ultrasonic energy at a fundamental frequency and (b) receiving reflected ultrasonic energy at a harmonic of the fundamental frequency is provided. For the improvement, the transmitting step includes the step of transmitting a uni-polar waveform or a waveform characterized by an amplitude change rate of 8 or fewer times pre carrier cycle, said waveform comprising an envelope shape rising gradually to a respective maximum value and falling gradually from the respective maximum value.
Public/Granted literature
- USD313412S Locking device for compact disc cassette Public/Granted day:1991-01-01
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