Clinical evaluation of synthetic aperture sequential beamforming

Peter Møller Hansen, Martin Christian Hemmsen, Theis Lange, Jens Munk Hansen, Michael Bachmann Nielsen, Jørgen Arendt Jensen

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In this study clinically relevant ultrasound images generated with synthetic aperture sequential beamforming (SASB) is compared to images generated with a conventional technique. The advantage of SASB is the ability to produce high resolution ultrasound images with a high frame rate and at the same time massively reduce the amount of generated data. SASB was implemented in a system consisting of a conventional ultrasound scanner connected to a PC via a research interface. This setup enables simultaneous recording with both SASB and conventional technique. Eighteen volunteers were ultrasound scanned abdominally, and 84 sequence pairs were recorded. Each sequence pair consists of two simultaneous recordings of the same anatomical location with SASB and conventional B-mode imaging. The images were evaluated in terms of spatial resolution, contrast, unwanted artifacts, and penetration depth of the ultrasound beam. Five ultrasound experts (radiologists) evaluated the sequence pairs in a side-by-side comparison, and the results show that image quality using SASB was better than conventional B-mode imaging. 73 % of the evaluations favored SASB, and a probability of 70 % was calculated for a new radiologist to prefer SASB over conventional imaging, if a new sequence was recorded. There was no significant difference in penetration depth.
Original languageEnglish
Title of host publicationProceedings of SPIE
PublisherSPIE - International Society for Optical Engineering
Publication date2012
Publication statusPublished - 2012
EventSPIE Medical Imaging 2012: Ultrasonic Imaging, Tomography, and Therapy - San Diego, United States
Duration: 5 Feb 20126 Feb 2012
Conference number: 8320


ConferenceSPIE Medical Imaging 2012
Country/TerritoryUnited States
CitySan Diego


  • Clinical evaluation
  • Clinical demonstration
  • Ultrasound imaging
  • Synthetic aperture sequential beamforming


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