16 July 2015 Towards non-invasive imaging of surgical suture degradation with photoacoustic microscopy
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The characterization of the degradation of surgical sutures (~500 μm diameter) up to ~9 mm in tissue phantoms and up to ~3 mm depth in euthanized mice, and its potential application in in vivo animals is demonstrated using a custom dark-field photo-acoustic microscope (PAM). By using a simple theoretical approach and modelling the characteristics of our ultrasound transducer, both theoretical and experimental observations are in good agreement. The implications of this work for industrial applications are discussed by comparing the measurements with an optical microscope and with a developed algorithm on tissue simulating phantoms and with ex vivo measurements using PAM.
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Jordi Morales-Dalmau, Jordi Morales-Dalmau, Juan Aguirre, Juan Aguirre, Lutz Funk, Lutz Funk, Francesc Jara, Francesc Jara, Pau Turon, Pau Turon, Turgut Durduran, Turgut Durduran, } "Towards non-invasive imaging of surgical suture degradation with photoacoustic microscopy", Proc. SPIE 9539, Opto-Acoustic Methods and Applications in Biophotonics II, 95390B (16 July 2015); doi: 10.1117/12.2183278; https://doi.org/10.1117/12.2183278

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