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Proceedings Paper

Clinical evaluation of synthetic aperture sequential beamforming
Author(s): Peter Møller Hansen; Martin Christian Hemmsen; Theis Lange; Jens Munk Hansen; Michael Bachmann Nielsen; Jørgen Arendt Jensen
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Paper Abstract

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.

Paper Details

Date Published: 24 February 2012
PDF: 7 pages
Proc. SPIE 8320, Medical Imaging 2012: Ultrasonic Imaging, Tomography, and Therapy, 83200K (24 February 2012); doi: 10.1117/12.911135
Show Author Affiliations
Peter Møller Hansen, Copenhagen Univ. Hospital Rigshopitalet (Denmark)
Martin Christian Hemmsen, Technical Univ. of Denmark (Denmark)
BK Medical (Denmark)
Theis Lange, Univ. of Copenhagen (Denmark)
Jens Munk Hansen, Technical Univ. of Denmark (Denmark)
Michael Bachmann Nielsen, Copenhagen Univ. Hospital Rigshopitalet (Denmark)
Jørgen Arendt Jensen, Technical Univ. of Denmark (Denmark)

Published in SPIE Proceedings Vol. 8320:
Medical Imaging 2012: Ultrasonic Imaging, Tomography, and Therapy
Johan G. Bosch; Marvin M. Doyley, Editor(s)

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