A Modified Synthetic Aperture Focussing Technique Utilising the Spatial Impulse Response of the Ultrasound Transducer

Mosey, Stephen A. and Charlton, Peter and Wells, Ian (2013) A Modified Synthetic Aperture Focussing Technique Utilising the Spatial Impulse Response of the Ultrasound Transducer.

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Abstract

In B-mode imaging, lateral resolution is impeded by the size and shape of the ultrasound beam used to create the image. For improved lateral resolution, a focussing method that utilises a beam model calculated using the Fraunhofer far field approximations to enhance the Synthetic Aperture Focussing Technique (SAFT) is proposed. The Beam Model Weighted Synthetic Aperture Focussing Technique (BMW-SAFT) method uses an approximation of the beam model to weight the focussing algorithm and adjust the aperture size based on distance from the transducer. Through application to simulated data the method is compared with the conventional SAFT, where the proposed algorithm is found to provide significant improvements over the conventional SAFT methods.

Item Type: Article
Uncontrolled Keywords: ultrasound, synthetic aperture focussiong (SAFT), B- Scan, phased array, linear array
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculties > Faculty of Architecture, Computing and Engineering
Depositing User: John Dalling
Date Deposited: 02 Apr 2013 14:34
Last Modified: 19 Jan 2017 12:35
URI: http://repository.uwtsd.ac.uk/id/eprint/278

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