Diffuse reflectance measurement tool for laparoscopic surgery

Mario Ettore Giardini, Annett Birgit Klemm, Andrea Di Falco, T.F. Krauss

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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Continuous-wave diffuse reflectance or Near Infrared Spectroscopy (NIRS) offers the possibility to perform a preliminary screening of tissue for ischemia or other tissue anomalies. A tool for intracavity NIRS measurements during laparoscopic surgery, developed within the framework of the FP7-IP ARAKNES (Array of Robots Augmenting the KiNematics of Endoluminal Surgery) project, is described. It consists of a probe, that is located on the tip of an appropriately shaped laparoscopic manipulator and then applied to the tissue. Such a probe employs an array of incoherent semiconductor light sources (LEDs) frequency-multiplexed on a single detector using a lock-in technique. The resulting overall tool structure is simple and compact, and allows efficient coupling of the emitted light towards the tissue. The tool has high responsivity and enables fast and accurate measurements. A dataset gathered from in-vivo tissue is presented. The performance both indicates direct applicability of the tool to significant surgical issues (ischemia detection), and clearly indicates the possibility of further miniaturizing the probe head towards catheterized approaches.
Original languageEnglish
Title of host publicationProceedings of SPIE 7715
Subtitle of host publicationPhotonic Solutions for Better Health Care II
EditorsJürgen Popp, Wolfgang Drexler, Valery V. Tuchin, Dennis L. Matthews
Number of pages6
Publication statusPublished - 28 Apr 2010
EventSPIE Photonics Europe 2010 - Brussels, Belgium
Duration: 12 Apr 201016 Apr 2010

Publication series

NameProceedings of SPIE
PublisherSPIE Press
ISSN (Print)0277-786X


ConferenceSPIE Photonics Europe 2010


  • diffuse reflectance spectroscopy
  • surgery
  • tissues
  • near infrared spectroscopy
  • semiconductors
  • sensors
  • kinematics
  • light emitting diodes
  • light sources
  • multiplexing


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