Open AccessMiniature forward-viewing common-path OCT probe for imaging the renal pelvis
Author(s) -
Xiaoyong Fu,
Dhruti Patel,
Heyuan Zhu,
Gregory T. MacLennan,
Yves T. Wang,
Michael W. Jenkins,
Andrew M. Rollins
Publication year - 2015
Publication title -
biomedical optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.6.001164
Subject(s) - optics , renal pelvis , materials science , optical coherence tomography , biomedical engineering , medicine , anatomy , physics , urinary system
We demonstrate an ultrathin flexible cone-scanning forward-viewing OCT probe which can fit through the working channel of a flexible ureteroscope for renal pelvis imaging. The probe is fabricated by splicing a 200 µm section of core-less fiber and a 150 µm section of gradient-index (GRIN) fiber to the end of a single mode (SM) fiber. The probe is designed for common-path OCT imaging where the back-reflection of the GRIN fiber/air interface is used as the reference signal. Optimum sensitivity was achieved with a 2 degree polished probe tip. A correlation algorithm was used to correct image distortion caused by non-uniform rotation of the probe. The probe is demonstrated by imaging human skin in vivo and porcine renal pelvis ex vivo and is suitable for imaging the renal pelvis in vivo for cancer staging.