A non-contact method and instrumentation to monitor renal ischemia and reperfusion with optical spectroscopy

Rajesh N. Raman, Christopher D. Pivetti, Dennis L Matthews, Christoph Troppmann, Stavros G. Demos

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

The potential of NADH autofluorescence as an in vivo intrinsic optical signature to monitor tissue metabolism is well recognized and supported by experimental results mainly in animal models. In this work, we propose a non-contact implementation of this method using large area excitation and employing a normalization method to account for nonmetabolic signal changes. Proof of principle in vivo experiments were carried out using an autofluorescence imaging experimental system and a rat renal ischemia model. A hand-held fiber-optic probe was utilized to test the ability of the signal normalization method to address operational conditions associated with the translation of this method to a clinical setting. Preliminary pre-clinical in vivo test of the probe system was carried out using the same rat model.

Original languageEnglish (US)
Pages (from-to)894-905
Number of pages12
JournalOptics Express
Volume17
Issue number2
DOIs
StatePublished - Jan 19 2009

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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