| High power, low frequency ultrasound: meniscal tissue interaction and ablation characteristics. | |
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MedLine Citation:
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PMID: 21420582 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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This study evaluates high power low frequency ultrasound transmitted via a flat vibrating probe tip as an alternative technology for meniscal debridement in the bovine knee. An experimental force controlled testing rig was constructed using a 20 kHz ultrasonic probe suspended vertically from a load cell. Effect of variation in amplitude of distal tip displacement (242-494 μm peak-peak) settings and force (2.5-4.5 N) on tissue removal rate (TRR) and penetration rate (PR) for 52 bovine meniscus samples was analyzed. Temperature elevation in residual meniscus was measured by embedded thermocouples and histologic analysis. As amplitude or force increases, there is a linear increase in TRR (Mean: 0.9 to 11.2 mg/s) and PR (Mean: 0.08 to 0.73 mm/s). Maximum mean temperatures of 84.6°C and 52.3°C were recorded in residual tissue at 2 mm and 4 mm from the ultrasound probe-tissue interface. There is an inverse relationship between both amplitude and force, and temperature elevation, with higher settings resulting in less thermal damage. (E-mail: garrett.mcguinness@dcu.ie). |
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Authors:
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Brendan J O'Daly; Edmund Morris; Graham P Gavin; Conor O'Keane; John M O'Byrne; Garrett B McGuinness |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Ultrasound in medicine & biology Volume: 37 ISSN: 1879-291X ISO Abbreviation: Ultrasound Med Biol Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-03-22 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0410553 Medline TA: Ultrasound Med Biol Country: England |
Other Details:
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Languages: eng Pagination: 556-67 Citation Subset: IM |
Copyright Information:
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Copyright © 2011 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved. |
Affiliation:
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Department of Trauma and Orthopaedic Surgery, Royal College of Surgeons in Ireland, Cappagh National Orthopaedic Hospital, Dublin, Ireland; Materials Processing Research Centre, School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin, Ireland. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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