High-Resolution, Wide-Field, Forward-Viewing Spectrally Encoded Endoscope
AffiliationUniv Arizona, Coll Opt Sci, Dept Biomed Engn
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CitationZeidan, A. , Do, D. , Kang, D. , Ikuta, M. , Ryu, J. and Tearney, G. J. (2019), High‐Resolution, Wide‐Field, Forward‐Viewing Spectrally Encoded Endoscope. Lasers Surg. Med., 51: 808-814. doi:10.1002/lsm.23102
JournalLASERS IN SURGERY AND MEDICINE
Rights© 2019 Wiley Periodicals, Inc.
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AbstractBackground and Objective Spectrally encoded endoscopy (SEE) is an optical imaging technology that uses spatial wavelength multiplexing to conduct endoscopy in miniature, small diameter probes. Contrary to the previous side-viewing SEE devices, forward-viewing SEE probes are advantageous as they provide a look ahead that facilitates navigation and surveillance. The objective of this work was to develop a miniature forward-viewing SEE probe with a wide field of view and a high spatial resolution. Materials and Methods We designed and developed a forward-viewing SEE device with an overall total diameter of 1.27 mm, which consists of a monolithic illumination probe with a length of 3.87 mm and a diameter of 500 mu m, 8 multimode detection fibers that were polished at a 17 degrees angle, a rotational scanning mechanism, and a sheath. The SEE device was evaluated using a USAF resolution target and was used for preclinical imaging of a swine joint ex vivo. Results This design resulted in a high resolution probe (best spatial resolution of 20.3 mu m), a wide total angular field of view of 100 degrees, and an effective number of imaging elements of ~344,000 pixels. The SEE probe performance was compared to a commercial color chip-on-the-tip endoscope; while monochrome, results showed better spatial resolution and a wider field of view for the SEE device. Conclusion These results demonstrate the potential of this forward-viewing SEE probe for visualization and navigation in medical imaging applications. Lasers Surg. Med. (c) 2019 Wiley Periodicals, Inc.
Note12 month embargo; published online: 26 May 2019
VersionFinal accepted manuscript
SponsorsCanon U.S.A, Inc.