Optical spectroscopy combined with high-resolution magnetic resonance imaging for digestive wall assessment: endoluminal bimodal probe conception and characterization in vitro, on organic sample and in vivo on a rabbit.

Abstract : Colorectal cancer is a major health issue worldwide. Conventional white light endoscopy (WLE) coupled to histology is considered as the gold standard today and is the most widespread technique used for colorectal cancer diagnosis. However, during the early stages, colorectal cancer is very often characterized by flat adenomas which develop just underneath the mucosal surface. The use of WLE, which is heavily based on the detection of morphological changes, becomes quite delicate due to subtle or quasi-invisible morphological changes of the colonic lining. Several techniques are currently being investigated in the scope of providing new tools that would allow such a diagnostic or assist actual techniques in so doing. We hereby present a novel technique where high spatial resolution MRI is combined with autofluorescence and reflectance spectroscopy in a bimodal endoluminal probe to extract morphological data and biochemical information, respectively. The design and conception of the endoluminal probe are detailed and the promising preliminary results obtained in vitro (home-built phantom containing eosin and rhodamine B), on an organic sample (the kiwi fruit) and in vivo on a rabbit are presented and discussed.
Type de document :
Article dans une revue
Journal of Biomedical Optics, Society of Photo-optical Instrumentation Engineers, 2011, 16 (11), pp.117005. 〈10.1117/1.3646917〉
Liste complète des métadonnées

http://www.hal.inserm.fr/inserm-00664036
Contributeur : Lotfi Senhadji <>
Soumis le : samedi 28 janvier 2012 - 11:36:01
Dernière modification le : lundi 6 août 2018 - 16:46:07

Identifiants

Citation

Anoop Ramgolam, Raphaël Sablong, Lionel Lafarge, Hervé Saint-Jalmes, Olivier Beuf. Optical spectroscopy combined with high-resolution magnetic resonance imaging for digestive wall assessment: endoluminal bimodal probe conception and characterization in vitro, on organic sample and in vivo on a rabbit.. Journal of Biomedical Optics, Society of Photo-optical Instrumentation Engineers, 2011, 16 (11), pp.117005. 〈10.1117/1.3646917〉. 〈inserm-00664036〉

Partager

Métriques

Consultations de la notice

982