Cirrus OCT扫描信号对正常人黄斑部视网膜厚度和容积测量的影响

doi:10.3760/cma.j.issn.1674-845X.2013.03.007

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摘要

目的研究频域光学相干断层扫描（OCT）信号对黄斑部视网膜厚度、容积测量的影响。方法回顾性队列研究。用Cirrus OCT对109例正常志愿者进行黄斑厚度扫描，测量黄斑部视网膜的厚度和容积。根据扫描信号将受检者分为A1组[双眼信号强度（SS）≥7]、A2组（双眼SS＜7）、B1组（双眼SS不同，均≥7）、B2组（双眼SS不同，均<7）和B3组（一眼SS≥7，另一眼SS＜7），比较相同扫描信号两眼及不同扫描信号两眼眼底参数的差异。采用单因素方差分析和配对t检验进行分析。结果 A1组、A2组及B1组双眼黄斑部视网膜的厚度和容积差异无统计学意义。在B2组，信号较强眼的黄斑容积（CV）稍大于信号较弱眼，差异有统计学意义（t=-2.776，P＜0.05）；在B3组，信号较弱眼的黄斑容积（CV）及黄斑部平均厚度（CAT）稍大于信号较强眼，差异有统计学意义（t=2.871，P＜0.05；t=3.210，P＜0.05）。结论扫描信号能够影响频域OCT对黄斑部厚度及容积的测量。

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	胡旭颋
	丁小燕
	马伟
	袁玲
	雷蕾
	唐仕波

关键词 ：体层摄影术, 光学相干, 视网膜厚度, 黄斑, 扫描信号

Abstract：

Objective To investigate the effects of signal strength （SS） on the measurement of macular thickness and volume in normal volunteers with spectral-domain optical coherence tomography （OCT）. Methods This was a retrospective cohort study. The retinal thickness of 109 normal volunteers was measured by a cubic scan of the macular， Cirrus OCT. All eyes were divided into subgroups： group A1 （identical SS ≥7 in both eyes）， group A2 （identical SS ＜7 in both eyes）， group B1 （different SS≥7 in both eyes）， group B2 （different SS＜7 in both eyes） and group B3 （SS≥7 in one eye， SS＜7 in the other eye）. Macular thickness and volume were measured in the subgroups. ANOVA and paired t test were used to analyze. Results There were no differences in macular thickness and volume for both eyes in group A1， group A2 and group B1. There was a significant positive correlation between SS and macular cubic volume in group B2 （t=-2.776， P<0.05）. However， there was a significant negative correlation between SS and macular cubic volume and average macular thickness in group B3 （t=2.871， P＜0.05； t=3.210， P＜0.05）. Conclusion Signal strength is one of the determi-nants of macular thickness measurement with spectral-domain optical coherence tomography.

Key words： Tomography optical coherence Retinal thickness Macula Scan signal

收稿日期: 2012-03-21

通讯作者: 唐仕波

引用本文:

胡旭颋,丁小燕,马伟,袁玲,雷蕾,唐仕波. Cirrus OCT扫描信号对正常人黄斑部视网膜厚度和容积测量的影响[J]. 中华眼视光学与视觉科学杂志, 2013, 15(3): 156-158. HU Xu-ting,DING Xiao-yan,MA Wei,YUAN Ling,LEI Lei,TANG Shi-bo. Signal strength affects normal macular thickness and volume measurements with Cirrus optical coherence tomography. Chinese Journal of Optometry Ophthalmology and Visual Science, 2013, 15(3): 156-158. DOI: 10.3760/cma.j.issn.1674-845X.2013.03.007

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https://www.cjoovs.com/CN/10.3760/cma.j.issn.1674-845X.2013.03.007 或 https://www.cjoovs.com/CN/Y2013/V15/I3/156

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