Title:
可変サンプリングを用いたビームフォーミングのためのシステム及び方法
Document Type and Number:
Japanese Patent JP6779886
Kind Code:
B2
Abstract:
The present disclosure provides systems and methods for ultrasound imaging using a modified variable sampling beamforming technique. Unlike conventional methods of variable sampling beamforming, in which in-phase and quadrature samples are obtained for each pixel location, in various example embodiments of the present disclosure, the pixel locations are quadrature-spaced such that for each 5 sample point, an adjacent sample point along an A-line is employed as the quadrature sample. The samples at each array element may be triggered according to the time of flight between a first pixel location and the location of the array element, such that successive samples, corresponding to successive pixel locations along the selected A-line, are obtained such that adjacent samples are spaced by a 10 time interval corresponding to a quarter of an odd number of wavelenghths of the beamformed transmit pulse, and such that only one sample is acquired per pixel.
Inventors:
Brown, jeremy
Samsung, christopher
Reed better, jeff
Samsung, christopher
Reed better, jeff
Application Number:
JP2017538306A
Publication Date:
November 04, 2020
Filing Date:
January 22, 2016
Export Citation:
Assignee:
DALHOUSIE UNIVERSITY
International Classes:
A61B8/00
Domestic Patent References:
| JP2007260394A | ||||
| JP2015526206A |
Foreign References:
| US20070232917 | ||||
| KR1020070097724A | ||||
| WO2014031967A1 | ||||
| US20140056099 | ||||
| US20130109969 |
Other References:
Jeremy A. Brown,A Digital Beamformer for High-Frequency Annular Arrays,IEEE TRANSUCTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CINTROL,米国,2005年 8月,VOL.52 NO.8,1262-1269
山越芳樹,著音波信号の直接デジタル検波と複素相関を用いた胎児の心拍数推定,電子情報通信学会誌,日本,2001年12月,A Vol.J84-A No.12,1414-1420
Jorge Camacho,Phase Coherence Imaging,IEEE TRANSACTION ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL,米国,2009年 5月,VOL.56, NO.5,958-974
山越芳樹,著音波信号の直接デジタル検波と複素相関を用いた胎児の心拍数推定,電子情報通信学会誌,日本,2001年12月,A Vol.J84-A No.12,1414-1420
Jorge Camacho,Phase Coherence Imaging,IEEE TRANSACTION ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL,米国,2009年 5月,VOL.56, NO.5,958-974
Attorney, Agent or Firm:
Hiraki International Patent Office