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Proceedings Paper

Soft tissue differentiation by diffuse reflectance spectroscopy
Author(s): Azhar Zam; Florian Stelzle; Emeka Nkenke; Katja Tangermann-Gerk; Michael Schmidt; Werner Adler; Alexandre Douplik
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Paper Abstract

Laser surgery gives the possibility to work remotely which leads to high precision, little trauma and high level sterility. However these advantages are coming with the lack of haptic feedback during the laser ablation of tissue. Therefore additional means are required to control tissue-specific ablation during laser surgery supporting the surgeon regardless of experience and skills. Diffuse Reflectance Spectroscopy provides a straightforward and simple approach for optical tissue differentiation. We measured diffuse reflectance from four various tissue types ex vivo. We applied Linear Discriminant Analysis (LDA) to differentiate the four tissue types and computed the area under the ROC curve (AUC). Special emphasis was taken on the identification of nerve as the most crucial tissue for maxillofacial surgery. The results show a promise for differentiating soft tissues as guidance for tissue-specific laser surgery by means of the diffuse reflectance.

Paper Details

Date Published: 7 July 2009
PDF: 6 pages
Proc. SPIE 7368, Clinical and Biomedical Spectroscopy, 736821 (7 July 2009); doi: 10.1117/12.831616
Show Author Affiliations
Azhar Zam, Friedrich-Alexander-Univ. of Erlangen-Nuremberg (Germany)
Florian Stelzle, Friedrich-Alexander-Univ. of Erlangen-Nuremberg (Germany)
Emeka Nkenke, Friedrich-Alexander-Univ. of Erlangen-Nuremberg (Germany)
Katja Tangermann-Gerk, Bavarian Laser Ctr. (Germany)
Michael Schmidt, Bavarian Laser Ctr. (Germany)
Werner Adler, Friedrich-Alexander-Univ. of Erlangen-Nuremberg (Germany)
Alexandre Douplik, Friedrich-Alexander-Univ. of Erlangen-Nuremberg (Germany)

Published in SPIE Proceedings Vol. 7368:
Clinical and Biomedical Spectroscopy
Irene Georgakoudi; Jürgen Popp; Katarina Svanberg M.D., Editor(s)

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