Common path optical coherence tomography with electronic feedback for improved sensitivity

IF 0.7 4区物理与天体物理 Q4 OPTICS

Optica Applicata Pub Date : 2023-01-01 DOI:10.37190/oa230312

Khalid Alsnaie

引用次数: 0

Abstract

Optical coherence tomography (OCT) imaging has become a useful tool in medical diagnosis over the past 25 years, because of its ability to visualize intracellular structures at high resolution. The main objective of this work is to add electronic feedback to the optical coherence tomography setup to increase its sensitivity. Noise added to the measured interferogram obscures some details of examined tissue layered structure. Adjusting signal power level in such a way to improve signal-to-noise ratio can help to enhance image quality. Electronic feedback is added to enhance system sensitivity. A logarithmic amplifier is included in the OCT setup to automatically adapt signal level. Moreover, the resolution of the optical spectrum analyzer is controlled according to the farthest layer detected in the A-scan. These techniques are tested showing an improvement in obtained image of a human nail.

查看原文本刊更多论文

带电子反馈的共程光学相干层析成像提高了灵敏度

光学相干断层扫描(OCT)成像在过去的25年中已经成为医学诊断的一个有用的工具，因为它能够以高分辨率显示细胞内结构。本工作的主要目的是在光学相干层析成像装置中增加电子反馈以提高其灵敏度。添加到测量干涉图中的噪声模糊了被检测组织分层结构的一些细节。通过调整信号功率电平来提高信噪比，有助于提高图像质量。增加了电子反馈，提高了系统的灵敏度。一个对数放大器包括在OCT设置自动适应信号电平。此外，根据a扫描中检测到的最远层来控制光谱分析仪的分辨率。这些技术经过测试，显示了获得的人类指甲图像的改进。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Optica Applicata 物理-光学

CiteScore

1.00

自引率

16.70%

发文量

审稿时长

4 months

期刊介绍： Acoustooptics, atmospheric and ocean optics, atomic and molecular optics, coherence and statistical optics, biooptics, colorimetry, diffraction and gratings, ellipsometry and polarimetry, fiber optics and optical communication, Fourier optics, holography, integrated optics, lasers and their applications, light detectors, light and electron beams, light sources, liquid crystals, medical optics, metamaterials, microoptics, nonlinear optics, optical and electron microscopy, optical computing, optical design and fabrication, optical imaging, optical instrumentation, optical materials, optical measurements, optical modulation, optical properties of solids and thin films, optical sensing, optical systems and their elements, optical trapping, optometry, photoelasticity, photonic crystals, photonic crystal fibers, photonic devices, physical optics, quantum optics, slow and fast light, spectroscopy, storage and processing of optical information, ultrafast optics.