Simulation Study of Real Time 3-D Synthetic Aperture Sequential Beamforming for Ultrasound Imaging

Martin Christian Hemmsen, Morten Fischer Rasmussen, Matthias Bo Stuart, Jørgen Arendt Jensen

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This paper presents a new beamforming method for real-time three-dimensional (3-D) ultrasound imaging using a 2-D matrix transducer. To obtain images with sufficient resolution and contrast, several thousand elements are needed. The proposed method reduces the required channel count from the transducer to the main imaging system, by including electronics in the transducer handle. The reduction of element channel count is achieved using a sequential beamforming scheme. The beamforming scheme is a combination of a fixed focus beamformer in the transducer and a second dynamic focus beamformer in the main system. The real-time imaging capability is achieved using a synthetic aperture beamforming technique, utilizing the transmit events to generate a set of virtual elements that in combination can generate an image. The two core capabilities in combination is named Synthetic Aperture Sequential Beamforming (SASB). Simulations are performed to evaluate the image quality of the presented method in comparison to Parallel beamforming utilizing 16 receive beamformers. As indicators for image quality the detail resolution and Cystic resolution are determined for a set of scatterers at a depth of 90mm for elevation and azimuth angles from 0 to 25. Simulations show that the acoustic performance of the proposed method is less angle dependent than Parallel beamforming. The Cystic resolution is shown to be more than 50% improved, with a detail resolution on the same order as Parallel Beamforming.
Original languageEnglish
Title of host publicationProceedings of the SPIE - Progress in Biomedical Optics and Imaging
Number of pages10
PublisherSPIE - International Society for Optical Engineering
Publication date2014
Article number90401K
Publication statusPublished - 2014
EventSPIE Medical Imaging 2014 - Town & Country Resort and Convention Center, San Diego, California, United States
Duration: 15 Feb 201420 Feb 2014


ConferenceSPIE Medical Imaging 2014
LocationTown & Country Resort and Convention Center
Country/TerritoryUnited States
CitySan Diego, California
Internet address


  • Real-time 3-D imaging
  • channel reduction
  • 2-D matrix transducer
  • Synthetic aperture
  • Sequential beamforming
  • Medical imaging


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