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Proceedings Paper

Photoacoustic blood vessel detection during surgical laser interventions
Author(s): Jens Horstmann; Alexander Baade; Ralf Brinkmann
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Paper Abstract

This paper presents a discussion about the potential of photoacoustics with regard to its application in surgical assistance during minimally invasive, laser assisted interventions. Aim of the work is the detection of obscured large blood vessels in order to prevent unintentional dissection. Based on spectroscopic investigations of the target tissue (liver), a wavelength for the photoacoustic excitation laser was chosen with respect to a high absorption contrast between the vessel and the surrounding liver tissue. An experimental setup featuring a simple liver model is created. Preliminary results show, that vessels with a diameter of 2 mm can be detected up to a distance of 1 mm from the treatment fibre. It is shown, that detection of acoustic waves induced inside liver is feasible over distances higher than 10 cm.

Paper Details

Date Published: 8 June 2011
PDF: 6 pages
Proc. SPIE 8092, Medical Laser Applications and Laser-Tissue Interactions V, 80920Z (8 June 2011); doi: 10.1117/12.889635
Show Author Affiliations
Jens Horstmann, Univ. of Lübeck (Germany)
Alexander Baade, Medical Laser Ctr. Lübeck GmbH (Germany)
Ralf Brinkmann, Univ. of Lübeck (Germany)
Medical Laser Ctr. Lübeck GmbH (Germany)

Published in SPIE Proceedings Vol. 8092:
Medical Laser Applications and Laser-Tissue Interactions V
Ronald Sroka; Lothar D. Lilge, Editor(s)

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