Grading upper tract urothelial carcinoma with the attenuation coefficient of in-vivo optical coherence tomography.

This study proposes a μOCT cut-off of 4.0 mm-1 for quantitative grading of UTUC with ureterorenoscopic OCT imaging. The promising diagnostic accuracy calculations justify further studies to validate the proposed cut-off value. Implementation of the software for the μOCT analysis in OCT systems may allow for μOCT assessment at real time during ureterorenoscopy. Lasers Surg. Med. 9999:1-8, 2019. © 2019 Wiley Periodicals, Inc.