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Cavitation effect of holmium laser pulse applied to ablation of hard tissue underwater

Source: J. Biomed. Opt. 15, 048002 (2010); doi:10.1117/1.3470092

Published 5 August 2010

KEYWORDS and PACS
Keywords
PACS
  • 87.50.W-
    Biological effects of optical/infrared radiation
  • 87.64.M-
    Optical microscopy in biophysics and medical physics
  • 87.19.Pp
    Biothermics and thermal processes in biology (higher organisms)
  • YEAR: 2010
PUBLICATION DATA
ISSN:
1553-9628 (online)
Publisher:
AIP is a member of CrossRef SPIE
Tao Lü
Huazhong University of Science and Technology, College of Optoelectronics Science and Engineering, Wuhan National Laboratory for Optoelectronics, Wuhan, China 430074 and China University of Geosciences, School of Mathematics and Physics, Wuhan, China 430074

Qing Xiao
Huazhong University of Science and Technology, Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectrics, Wuhan, China 430074

Danqing Xia, Kai Ruan, and Zhengjia Li
Huazhong University of Science and Technology, College of Optoelectrics Science and Engineering, Wuhan National Laboratory for Optoelectronics, Wuhan, Hubei, 430074 China
To overcome the inconsecutive drawback of shadow and schlieren photography, the complete dynamics of cavitation bubble oscillation or ablation products induced by a single holmium laser pulse [2.12  µm, 300  µs (FWHM)] transmitted in different core diameter (200, 400, and 600  µm) fibers is recorded by means of high-speed photography. Consecutive images from high-speed cameras can stand for the true and complete process of laser-water or laser-tissue interaction. Both laser pulse energy and fiber diameter determine cavitation bubble size, which further determines acoustic transient amplitudes. Based on the pictures taken by high-speed camera and scanned by an optical coherent microscopy (OCM) system, it is easily seen that the liquid layer at the distal end of the fiber plays an important role during the process of laser-tissue interaction, which can increase ablation efficiency, decrease heat side effects, and reduce cost. ©2010 Society of Photo-Optical Instrumentation Engineers
History: Received 3 May 2010; revised 31 May 2010; accepted 2 June 2010; published 5 August 2010
Permalink: http://dx.doi.org/10.1117/1.3470092

REFERENCES (56)

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  1. O. Fohn, H. S. Pratisto, F. Konz, M. Ith, H. J. Altermatt, M. Frenz, and H. P. Weber, “Side-firing fiber device for underwater tissue ablation with Ho:YAG and Er:YAG laser radiation,” J. Biomed. Opt. 3(1), 112–122 (1998).
  2. A. B. Karpiouk, S. R. Aglyamov, F. Bourgeois, A. Ben-Yakar, and S. Y. Emelianov, “Quantitative ultrasound method to detect and monitor laser-induced cavitation bubbles,” J. Biomed. Opt. 13(3), 034011 (2008).

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