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  coherence
    The same spot of CNV formation was determined by fundus fluorescein angiography(FFA) and optical coherence tomography(OCT) on the 7,14,21 and 28 d after laser photocoagulation. The changes of the number /area ratio of fluorescein leakage(mm2) at the early-phase(<2 minutes) and the late-phase(>10 minutes) of each day were measured.
    分别于光凝后7、14、21和28 d随机选取5只行眼底荧光素血管造影术(fundus fluorescein angiogrphy,FFA)和光学相干断层成像术(optical coherence tomography,OCT)检查,比较FFA早期(<2 min)和晚期(>10 min)荧光渗漏斑数/平均渗漏面积(mm2)的变化,并行统计学分析。
短句来源
    Objective The evaluation and examination of optical coherence tomography (OCT) in high myopia.
    目的对高度近视眼黄斑部进行光学相干断层扫描(Optical Coherence Tomography,OCT)检查评估。
短句来源
    [Objective] To investigate the difference of central corneal thickness(CCT) measured by optical coherence tomography(OCT), anterior chamber-optical coherence tomography(AC-OCT),and compare their repeatability.
    【目的】探讨眼前段光学相干断层扫描仪(AC-OCT)测量中央角膜厚度(CCT),并与光学相干断层扫描仪(OCT)进行比较。
短句来源
    Methods Sixty normal subjects (120 eyes) underwent optical coherence tomography (OCT 3000) to obtain the neurosensory retinal thickness (NRT) of nine sections and the foveola, and the total macular volume. The scan model was a fast macular thickness map, and the analysis model was the retinal thickness/volume analysis.
    方法应用光学相干断层成像术(optical coherence tomography,OCT3000)对60例(120眼)正常人的黄斑部进行扫描,扫描模式为快速黄斑厚度地形图(fast macular thickness map),分析模式为视网膜厚度/体积分析(retinal thickness/volume analysis),应用OCT3000自带软件分别测出9个分区和黄斑中心小凹的NRT及总黄斑体积。
短句来源
    Objective To observe the morphological changes of macular pucker with the use of optical coherence tomography(OCT)and other examinations.
    目的应用光学相干断层扫描(Optical Coherence Tomography,OCT)观察黄斑视网膜前膜的形态。
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  “相干”译为未确定词的双语例句
    Methods Zeiss IOLMaster3.02 and QMC 5.03 ultrasonic A-scan are used sequentially in a group of senile cataract patients screened out in a blind prevention project.
    方法用Zeiss IOLMaster3.02相干光生物测量仪(PCI)和QMC5.03接触式A型超声生物测量仪(A超)分别测量防盲筛查中确诊的老年性白内障患者365例365眼的眼球轴长。
短句来源
    Methods IOP of 83 normal per- sons (83 eyes) was measured using GAT and NCT, and CCT was measured using OCT.
    方法分别用Goldmann眼压计与NCT测量83例(83只眼)正常人的眼压,采用光学相干断层扫描仪(OCT)测量CCT。
短句来源
    OCT in the macula in high myopia eyes and its clinical significance
    高度近视性黄斑病变光学相干断层扫描检查的临床意义
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    Clinical significance of OCT in early diagnosis of Vogt-Koyanagi-Harada syndrome
    光学相干断层成像术对Vogt-小柳原田综合征早期诊断的意义
短句来源
    Clinical study of retinal nerve fiber layer thickness in myopia using optical conhenrence tomography
    近视眼神经纤维层光学相干断层扫描检测的临床研究
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  coherence
Based on electromagnetic theory, a computing model of the Talbot interferometer is established with the temporal and the spatial coherence taken into account and with the turning angle of the reflectors as a critical parameter.
      
To accurately represent the piezoresistive properties of RTD, the current-voltage characteristic coherence of the same RTD was tested.
      
Compared with the results of the finite element software SAMCEF, the numerical simulation results show the good coherence and advantages of the analysis method.
      
The first feedback strategy can effectively acquire information, but it destroys the coherence in feedback loop.
      
On the contrary, coherent quantum feedback does not destroy the coherence, but the capability of information acquisition is limited.
      
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VEPS(visual evoked potentials)of normal volunteers were obtained in our experiments.It is confirmed that VEP is extracted from spontaneous brain waves by overlap-adding and coherence time average techniques.But the number of times for overlap-adding is limited and the noise can not be eliminated completely.In order to restrain and decrease the noise,the various noise sources for the pattern reversal stimulator and its effect on the VEP are discussed in detail.

叙述了视觉诱发电位及其研究的意义。并通过头实验获得正常人的视觉诱发电位曲线。然后在理论上论证了用叠加相干平均信号处理的技术。最后,较详细而全面地阐述了模式翻转刺激视觉诱发电位的可能噪声来源及其影响,并简述了如何正确使用和研制视觉诱发电位仪和刺激器。

Optical coherence tomography (OCT) is a new imaging modality that provides cross -sectional tomographs of ocular structure in vivo. OCT system utilizes propagation of light through, and the time - of - flight delay of light reflected back from biological tissue to produce false - color images of microstructure. OCT has superior spatial resolution (10μm) than other optical imaging instruments, and maybe achieved at arbitrary penetration depth in transparent tissue with a noncontact, noninvasive measurement. Such...

Optical coherence tomography (OCT) is a new imaging modality that provides cross -sectional tomographs of ocular structure in vivo. OCT system utilizes propagation of light through, and the time - of - flight delay of light reflected back from biological tissue to produce false - color images of microstructure. OCT has superior spatial resolution (10μm) than other optical imaging instruments, and maybe achieved at arbitrary penetration depth in transparent tissue with a noncontact, noninvasive measurement. Such features make OCT useful for the early diagnosis, differential diagnosis and more sensitive monitoring of a variety of ocular abnormalities including glaucoma, retinal and anterior eye diseases. Eye Science 1998:14 ; 116 - 120.

光学相干断层成像术(OCT)是近几年始用于临床的新型影象诊断技术。与超声成像等技术不同,它利用光波在生物组织的传播特性并检测反射光的时程延迟,构成组织横断面图象,以观察其微细结构并进行定量分析,纵向分辨力可高达10μm,并具有非接触性、非侵害性等特点。在眼科,它不仅能够对眼前节的结构进行成像,还可以对视网膜各层次结构进行清晰的显像,为多种眼内疾病、特别是青光眼的早期诊断和研究提供了一种新的有效途径。眼科学报1998;14:116—120。

Purpoes:To measure retinal nerve fiber layer(RNFL) thickness in normal Chinese people for the use of early diagnosis in glaucomatous patients.

目的:光学相干断层成像术(optical coherence tomograpy,OCT)测定国人视网膜神经纤维层(reti-nal nerve fiber layer,RNFL)厚度的正常值,为在青光眼早期诊断中的应用奠定基础。方法:使用OCT对77例111只正常眼进行环绕视乳头的RNFL扫描(3.46mm直径),分析不同年龄、性别、眼别RNFL厚度的差异。结果:不同性别、眼别间RNFL的相应厚度无显著差异(P>0.05);各年龄组RNFL厚度平均值(x±s,μm):上象限为128.00±10.31~149.00±13.17、下象限132.95±9.54~142.33±10.60、全周平均RNFL109.00±4.72~114.28±7.98;RNFL随年龄增长有变薄的趋势,以上象限为明显(P<0.05)。结论:OCT检测所得RNFL厚度的均值与性别及眼别无关;应以年龄分组,在本研究的基础上扩大检验的样本数,建立RNFL正常值。眼科学报1998;14:207~209。

 
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