发明授权
- 专利标题: Ultrasonic diagnostic imaging of harmonic frequencies with speckle reduction processing
- 专利标题(中): 超声波诊断成像的谐波频率与斑点减少处理
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申请号: US99052申请日: 1998-06-17
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公开(公告)号: US5908389A公开(公告)日: 1999-06-01
- 发明人: David N. Roundhill , Michalakis Averkiou
- 申请人: David N. Roundhill , Michalakis Averkiou
- 专利权人: ATL Ultrasound, Inc.
- 当前专利权人: ATL Ultrasound, Inc.
- 主分类号: A61B8/08
- IPC分类号: A61B8/08 ; G01S7/52 ; G01S15/89 ; A61B8/00
摘要:
An ultrasonic diagnostic imaging system and methods are described which produces ultrasonic images from harmonic echo components of a transmitted fundamental frequency. Preferably, a programmable digital filter is used to pass harmonic echo components for image processing to the exclusion of fundamental frequency signals. In a preferred embodiment, artifacts are removed by producing decorrelated replicas of the harmonic signals, which are then combined and used for imaging. To produce an image in the presence of depth dependent attenuation of high frequency echo signals, both fundamental and harmonic echo signals are processed and used to produce an image blended from components of both fundamental and harmonic echo signals.
公开/授权文献
- USD412053S Side element of a shoe upper 公开/授权日:1999-07-20