1. Wide Band Reflectance Spectrometry and Hyperspectral Imaging for Intraoperative Tissue Recognition (abstract only)
- Author
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Tchebotareva, A., Schols, R.M., Wieringa, F.P., Alić, L., Bouvy, N., Stassen, L.P.S., Steeg, E. van de, Klomp, D., Baumer, S., Statham, A., and Dunias. P.
- Subjects
Hyper Spectral Imaging ,Medical Imaging ,Industrial Innovation ,OPT - Optics ,EAM - Equipment for Additive Manufacturing ,II - Intelligent Imaging ,PHS - Pharmacokinetics & Human Studies (tot 2013 daarna KFP) ,Image Processing ,High Tech Systems & Materials ,Physics & Electronics ,Mechatronics, Mechanics & Materials ,Life ,Image Enhancement ,Tissue Recognition ,Materials ,TS - Technical Sciences ,EELS - Earth, Environmental and Life Sciences - Abstract
One of the challenges during surgery is to make a proper distinction between vital tissues, structures and organs, both at the surface of the exposed area and beneath it. Currently, identification of different tissue types relies either on the skills and anatomical knowledge of the surgeon (e.g., nerves, blood vessels, different tissue types), or on the results of off-line histopathological analysis on biopsies for assessment of cancer-free margins. These approaches are observer-dependent, or, as in the case of off-line histopathological analysis, also time consuming. A quick, non-invasive, and more observer-independent intraoperative tissue recognition method, applicable both ex-vivo and in-vivo, would be of great assistance during surgical procedures. Hyper-Spectral Imaging (HSI) has a lot of potential for such applications. It combines high spatial resolution with spectral information at numerous wavelengths that cannot be separated by human eye in the visible, and also beyond the visible spectral range. This technique enables enhanced discrimination between different tissue types based on their specific spectral signatures. We will describe the approach to HSI which is being developed within van't Hoff Medical Shared Research Program at TNO in collaboration with multiple clinical, academic and industrial partners. We study and analyze wide-band reflectance spectra of different tissues types collected through a fiber-based probe, both in-vivo during open surgery procedures and ex-vivo on freshly excised tissues. These data are used to identify spectral signatures of different tissue types. Based on this information, we develop data processing techniques to identify and distinguish the target tissues. We also further develop this approach towards a HSI setup for tissue imaging. The first step with such a setup is testing on inorganic phantoms and animal tissues. At a later stage the setup will be employed for ex-vivo human tissue analysis, both at the surface and up to several millimeters beneath the surface, with the final goal of in vivo intraoperative tissue recognition and tissue-specific contrast-enhanced imaging
- Published
- 2013