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RESEARCH ARTICLE
Year : 2011  |  Volume : 2  |  Issue : 1  |  Page : 28

Modified full-field optical coherence tomography: A novel tool for rapid histology of tissues


1 Department of Urology, Weill Medical College of Cornell University, New York, USA
2 Department of Biochemistry, Weill Medical College of Cornell University, New York, USA
3 LLTech SAS, Paris, France

Correspondence Address:
Sushmita Mukherjee
Department of Biochemistry, Weill Medical College of Cornell University, New York
USA
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2153-3539.82053

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Background: Here, we report the first use of a commercial prototype of full-field optical coherence tomography called Light-CT TM . Based on the principle of white light interferometry, Light-CT TM generates quick high-resolution three-dimensional tomographic images from unprocessed tissues. Its advantage over the current intra-surgical diagnostic standard, i.e. frozen section analysis, lies in the absence of freezing artifacts, which allows real-time diagnostic impressions, and/or for the tissues to be triaged for subsequent conventional histopathology. Materials and Methods: In this study, we recapitulate known normal histology in nine formalin fixed ex vivo rat organs (skin, heart, lung, liver, stomach, kidney, prostate, urinary bladder, and testis). Large surface and virtually sectioned stacks of images at varying depths were acquired by a pair of 10x/0.3 numerical aperture water immersion objectives, processed and visualized in real time. Results: Normal histology of the following organs was recapitulated by identifying various tissue microstructures. Skin: epidermis, dermal-epidermal junction and hair follicles with surrounding sebaceous glands in the dermis. Stomach: mucosa with surface pits, submucosa, muscularis propria and serosa. Liver: hepatocytes separated by sinusoidal spaces, central veins and portal triad. Kidney: convoluted tubules, medullary rays (straight tubules) and collecting ducts. Prostate: acini and fibro-muscular stroma. Lung: bronchi, bronchioles, alveolar ducts, alveoli and pleura. Urinary bladder: urothelium, lamina propria, muscularis propria, and serosa. Testis: seminiferous tubules with intra-tubular sperms. Conclusion: Light-CT TM is a powerful imaging tool to perform fast histology on fresh and fixed tissues, without introducing artifacts. Its compact size, ease of handling, fast image acquisition and safe incident light levels makes it well-suited for various intra-operative and intra-procedural triaging and decision making applications.


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