1. A spatial resolution evaluation method of endoscopic optical coherence tomography system using the annular phantom

    A spatial resolution evaluation method of endoscopic optical coherence tomography system using the annular phantom

    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 (PSF) analysis method is used to analyze the imaging results of the annular phantom with the endoscopic OCT ...

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