A spatial resolution evaluation method of endoscopic optical coherence tomography system using the annular phantom. Issue 8 (24th May 2021)

• Record Type: Journal Article
• Authors: Huang, Ningning; Deng, Zhichao; Hu, Zhixiong; Mei, Jianchun; Zhao, Shiyong; Wu, Xining; Jia, Zongnan; Liu, Yuyan; Wang, Jin; Ye, Qing; Tian, Jianguo
• Is Part Of: Journal of biophotonics. Volume 14:Issue 8(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-05-24
• Subjects: annular phantoms -- endoscopic optical coherence tomography -- point spread function -- spatial resolution; Photonics -- Periodicals; Optical materials -- Periodicals; Optics -- Periodicals; Medical instruments and apparatus -- Periodicals; 621.3605
• DOI: 10.1002/jbio.202100035
• Languages: English
• ISSNs: 1864-063X

Abstract

Abstract: As an important biomedical imaging method, endoscopic optical coherence tomography (OCT) is necessary to check its performance regularly. The ordinary plane phantoms are only able to evaluate part of image tangent to the probe. In this research, a spatial resolution estimate method of the endoscope OCT system is proposed. The annular phantom, made by uniformly distributing golden scattered microparticles in polydimethylsiloxane (PDMS), can provide dynamic scanning imaging evaluation of endoscopic OCT system, closer to its actual working status. The point spread function analysis method is used to analyze the imaging results of the annular phantom with the endoscopic OCT system. And many scattered particles are statistically analyzed to determine the spatial resolution of the endoscope OCT system. The method is low in cost, simple and convenient. It is valuable for the development of test standards for endoscope OCT systems. Abstract : Huang et al. propose a spatial resolution estimate method of the endoscope OCT system. The annular phantom can provide dynamic scanning imaging evaluation closer to the endoscopic OCT system actual working status. The imaging results of the annular phantom are analyzed using PSF to determine the spatial resolution of the endoscope OCT system.