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dc.contributor.author유홍기-
dc.date.accessioned2018-02-28T04:50:16Z-
dc.date.available2018-02-28T04:50:16Z-
dc.date.issued2011-05-
dc.identifier.citationBIOMEDICAL OPTICS EXPRESS, 2, 6, 1412-1422en_US
dc.identifier.issn2156-7085-
dc.identifier.urihttps://www.osapublishing.org/boe/abstract.cfm?uri=boe-2-6-1412-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/41129-
dc.description.abstractComprehensive microscopy of distal esophagus could greatly improve the screening and surveillance of esophageal diseases such as Barrett’s esophagus by providing histomorphologic information over the entire region at risk. Spectrally encoded confocal microscopy (SECM) is a high-speed reflectance confocal microscopy technology that can be configured to image the entire distal esophagus by helically scanning the beam using optics within a balloon-centering probe. It is challenging to image the human esophagus in vivo with balloon-based SECM, however, because patient motion and anatomic tissue surface irregularities decenter the optics, making it difficult to keep the focus at a predetermined location within the tissue as the beam is scanned. In this paper, we present a SECM probe equipped with an adaptive focusing mechanism that can compensate for tissue surface irregularity and dynamic focal variation. A tilted arrangement of the objective lens is employed in the SECM probe to provide feedback signals to an adaptive focusing mechanism. The tilted configuration also allows the probe to obtain reflectance confocal data from multiple depth levels, enabling the acquisition of three-dimensional volumetric data during a single scan of the probe. A tissue phantom with a surface area of 12.6 cm was imaged using the new SECM probe, and 8 large-area reflectance confocal microscopy images were acquired over the depth range of 56 μm in 20 minutes. Large-area SECM images of excisedswine small intestine tissue were also acquired, enabling the visualization of villous architecture, epithelium, and lamina propria. The adaptive focusing mechanism was demonstrated to enable acquisition of in-focus images even when the probe was not centered and the tissue surface was irregular.en_US
dc.description.sponsorshipThis research was sponsored by National Institute of Health/National Cancer Institute (Grants R21CA122161 and R21 CA141884). Priyanka Jillella is currently with the University of Arizona.en_US
dc.language.isoenen_US
dc.publisherOPTICAL SOC AMERen_US
dc.titleComprehensive volumetric confocal microscopy with adaptive focusingen_US
dc.typeArticleen_US
dc.relation.no6-
dc.relation.volume2-
dc.identifier.doi10.1364/BOE.2.001412-
dc.relation.page1412-1422-
dc.relation.journalBiomedical Optics Express-
dc.contributor.googleauthorKang, DongKyun-
dc.contributor.googleauthorYoo, Hongki-
dc.contributor.googleauthorJillella, Priyanka-
dc.contributor.googleauthorBouma, Brett E.-
dc.contributor.googleauthorTearney, Guillermo J.-
dc.relation.code2012247121-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDIVISION OF ELECTRICAL AND BIOMEDICAL ENGINEERING-
dc.identifier.pidhyoo-


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