title: A wide field-of-view scanning endoscope for whole anal canal imaging.
abstract: We report a novel wide field-of-view (FOV) scanning endoscope, the AnCam, which is based on contact image sensor (CIS) technology used in commercialized business card scanners. The AnCam can capture the whole image of the anal canal within 10 seconds with a resolution of 89 μm, a maximum FOV of 100 mm × 120 mm, and a depth-of-field (DOF) of 0.65 mm at 5.9 line pairs per mm (lp/mm). We demonstrate the performance of the AnCam by imaging the entire anal canal of pigs and tracking the dynamics of acetowhite testing. We believe the AnCam can potentially be a simple and convenient solution for screening of the anal canal for dysplasia and for surveillance in patients following treatment for anal cancer.
authors.affiliation: Electrical Engineering, California Institute of Technology, Pasadena, CA 91125, USA ; These authors contributed equally ; chan@caltech.edu.
authors.forename: Chao
authors.initials: C
authors.lastname: Han
authors.affiliation: Electrical Engineering, California Institute of Technology, Pasadena, CA 91125, USA ; Department of Information and Electronic Engineering, Zhejiang University, Hangzhou 310027, China ; These authors contributed equally ; huangfujt@zju.edu.cn.
authors.forename: Jiangtao
authors.initials: J
authors.lastname: Huangfu
authors.affiliation: Division of Surgical Oncology, Department of Surgery, City of Hope, Duarte, CA 91010, USA ; These authors contributed equally.
authors.forename: Lily L
authors.initials: LL
authors.lastname: Lai
authors.affiliation: Electrical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
authors.forename: Changhuei
authors.initials: C
authors.lastname: Yang
keywords: (120.4820) Optical systems; (170.2150) Endoscopic imaging; (170.2680) Gastrointestinal