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Title: Intravascular ultrasound (IVUS) : a potential arthroscopic tool for quantitative assessment of articular cartilage
Authors: Huang, YP 
Zheng, YP 
Issue Date: 2009
Source: Open biomedical engineering journal, 2009, v. 3, p. 13-20
Abstract: Conventional ultrasound examination of the articular cartilage performed externally on the body surface around the joint has limited accuracy due to the inadequacy in frequency used. In contrast to this, minimally invasive arthroscopy-based ultrasound with adequately high frequency may be a better alternative to assess the cartilage. Up to date, no special ultrasound transducer for imaging the cartilage in arthroscopic use has been designed. In this study, we introduced the intravascular ultrasound (IVUS) for this purpose. An IVUS system with a catheter-based probe (Ø ≈ 1mm) was used to measure the thickness and surface acoustical reflection of the bovine patellar articular cartilage in vitro before and after degeneration induced by enzyme treatments. Similar measurement was performed using another high frequency ultrasound system (Vevo) with a probe of much larger size and the results were compared between the two systems. The thickness measured using IVUS was highly correlated (r = 0.985, p < 0.001) with that obtained by Vevo. Thickness and surface reflection amplitude measured using IVUS on the enzymatically digested articular cartilage showed changes similar to those obtained by Vevo, which were expectedly consistent with previous investigations. IVUS can be potentially used for the quantitative assessment of articular cartilage, with its ready-to-use arthroscopic feature.
Keywords: Ultrasound
High frequency
Intravascular ultrasound (IVUS)
Articular cartilage
Acoustical properties
Enzyme digestion
Publisher: Bentham Science Publishers Ltd.
Journal: Open biomedical engineering journal 
ISSN: 1874-1207
DOI: 10.2174/1874120700903010013
Rights: This work is licensed under the Creative Commons Attribution-NonCommercial License (
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