Invention Grant
US08545406B2 Dynamic aperture control and normalization for apodization in beamforming 有权
波束形成中的变迹的动态孔径控制和归一化

  • Patent Title: Dynamic aperture control and normalization for apodization in beamforming
  • Patent Title (中): 波束形成中的变迹的动态孔径控制和归一化
  • Application No.: US13305378
    Application Date: 2011-11-28
  • Publication No.: US08545406B2
    Publication Date: 2013-10-01
  • Inventor: David Patrick Magee
  • Applicant: David Patrick Magee
  • Applicant Address: US TX Dallas
  • Assignee: Texas Instruments Incorporated
  • Current Assignee: Texas Instruments Incorporated
  • Current Assignee Address: US TX Dallas
  • Agent Alan A. R. Cooper; W. James Brady, III; Frederick J. Telecky, Jr.
  • Main IPC: A61B8/00
  • IPC: A61B8/00
Dynamic aperture control and normalization for apodization in beamforming
Abstract:
A method of apodizing for ultrasound beamforming includes providing filtered digital channel data representing echo data from target tissue in a plurality (k) of data channels and a predefined number of active channels (Nact). A software-based integrated apodization algorithm dynamically apodizes the digital channel data using a selected apodizing function h[n,k], n being the sample number. The integrated apodization algorithm applies dynamic aperture control to create an effective aperture by generating a parameter numApertureChannels (Nap[n]), where Nap[n]≦Nact, and selecting Nap[n] particular data channels based on a dynamic beam focusing location for beamforming. Applied dynamic data scaling provides data normalization using a vector inner product between h[n,k] and a scale factor to generate normalized apodization factors hnorm [n,k]. The normalized apodization factors are applied to the digital channel data in the Nap[n] particular data channels to generate apodized and normalized digital channel data.
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