Adams, C, Mclaughlan, JR orcid.org/0000-0001-5795-4372, Nie, L orcid.org/0000-0002-5796-907X et al. (1 more author) (2017) Excitation and acquisition of cranial guided waves using a concave array transducer. In: Proceedings of Meetings on Acoustics. The 3rd Joint Meeting of the Acoustical Society of America and the European Acoustics Association, 25-29 Jun 2017, John B. Hynes Veterans Memorial, Boston, MA, USA. Acoustical Society of America
Abstract
Ultrasonic therapeutic transducers that consist of large numbers of unfocused, low power elements have begun to replace single high power elements. This allows the operator to use phased array techniques to change the focal position in the tissue during therapy. In transcranial therapy, this phased array configuration is essential to reduce local heating at the highly attenuating bone. Recently, Dual Mode Ultrasound Arrays (DMUAs) have been developed which leverage existing elements for imaging during therapy. DMUAs have the benefit of both the therapeutic and imaging systems being co-registered. Unfortunately, the highly reflective nature of bone means that DMUAs have not been applied to skull imaging. However the recent near-field observation of lamb waves in cranial bone opens the possibility for DMUAs to be applied to a guided wave scan of the skull. This would allow co-registration of the bone’s ultrasonic properties with the therapeutic axis. In this work, a beamforming scheme for the excitation of guided waves in cranial bone using a transcranial transducer is described and demonstrated. These guided waves are then observed in the far field and are shown to change velocity with skull thickness.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Adams, C, Mclaughlan, JR , Nie, L et al. (1 more author) (2017) Excitation and acquisition of cranial guided waves using a concave array transducer. In: Proceedings of Meetings on Acoustics. The 3rd Joint Meeting of the Acoustical Society of America and the European Acoustics Association, 25-29 Jun 2017, John B. Hynes Veterans Memorial, Boston, MA, USA. and may be found at http://dx.doi.org/10.1121/2. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Robotics, Autonomous Systems & Sensing (Leeds) |
Funding Information: | Funder Grant number Wellcome Trust 105615/Z/14/Z Royal Society RG170324 |
Depositing User: | Symplectic Publications |
Date Deposited: | 21 Dec 2018 09:54 |
Last Modified: | 17 Jan 2019 09:10 |
Status: | Published |
Publisher: | Acoustical Society of America |
Identification Number: | 10.1121/2.0000580 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:140295 |