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| 光学相干层析成像仪长期稳定性影响因素分析 |
| Analysis of influence factors on long-term stability of optical coherence tomography |
| 投稿时间：2018-12-18 |
| DOI：10.3969/j.issn.1005-5630.2019.06.006 |
| 中文关键词: 光学相干断层成像 信号 稳定性 统计 光谱仪 |
| 英文关键词:optical coherence tomography signal stability statistics spectrograph |
| 基金项目: |
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| 中文摘要: |
| 针对光学相干断层扫描仪在临床使用中出现稳定性差、容易造成信号衰减、维护周期短的现状，从市场上主流四代频域光学相干断层成像（OCT）设备取样，收集临床信号衰减故障信息。结合OCT原理，通过统计学原理分析了OCT内部各部件对稳定性的影响，并通过层次分析法分析各影响因素对OCT稳定性的权重。根据分析结果得出影响OCT长期稳定性的主要因素是光谱仪局部受热引起机械变形，进而导致信号衰减。根据层次分析结果对提高OCT长期稳定性的方法进行简要的探讨。 |
| 英文摘要: |
| In view of the current situation that the optical coherence tomography (OCT) scanner has poor stability in clinical use, is easy to cause signal attenuation, and has short maintenance cycle, this paper collects clinical signal attenuation fault information by sampling from the mainstream 4-generation frequency-domain optical coherence tomography equipment in the market. Combining with the principle of OCT, we analyze the influence of internal components of OCT on stability by statistical principle, and the weight of each influence factor on the stability of OCT through analytic hierarchy process (AHP). According to the analysis results, the main factor affecting the long-term stability of OCT is that the spectrometer is locally heated to cause mechanical deformation, which leads to signal attenuation. At last, according to the analytic hierarchy process, we briefly discuss the methods to improve the long-term stability of OCT. |
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