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FWHM图像分割法分析OCT影像中视网膜血管直径变化及其与2型糖尿病的相关性 被引量:3

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摘要 目的探讨利用频域相干光断层扫描(SD-OCT)视网膜血管,并用半高全宽(FWHM)图像分割法识别并测量视网膜血管形态变化及其与2型糖尿病的相关性。方法将47例确诊的2型糖尿病患者观察组和52例血糖正常者对照组分成两组,用SD-OCT检测视网膜颞上B区的血管,用IMAGEJ软件以半高全宽图像分割法识别出血管的边缘,测算出视网膜血管的腔内直径(LD)、外直径(OD),血管壁厚度(WT)、血管壁横截面面积(WCSA)、壁腔比(WLR)。结果观察组视网膜动脉的外直径(RAOD)、内直径(RALD)、WT分别为[(107.47±14.42)、(137.65±15.59)、(15.09±2.56)μm],动脉WLR为(0.28±0.06),动脉WCSA为(5836.11±1378.10)μm2,对照组KAOD、RALD、动脉WT分别为I(103.32±14.99)、(133.69±16.36)、(15.18±2.17)μm2,动脉WLR为(0.29±0.05),动脉WCSA为(5685.20±1255.26)μm2,观察组与对照组比较1KAOD(P=0.165)、RALD(P=0.222)、动脉WT(P=0.842)、动脉WLR(P=0.266)、动脉WCSA(P=0.570)。观察组和对照组视网膜静脉外直径(RVOD)、视网膜静脉内直径(RVLD)、静脉WT分别为[(142.74±24.93)、(166.73±26.24)、(1221±2.07)μm]和[(133.19±18.76)、(155.24±20.70)、(11.02±2.250)μm],差异有统计学意义(P均〈0.05);观察组静脉WCSA(5987.98±1616.32)μm2大于对照组(505238±1506.169)μm。(P=0.004);静脉WLR两组无明显差异(P=0.274)。结论FWHM图像分割法分析OCT图像是一种非侵入性、可靠的视网膜血管测量技术。2型糖尿病患者的视网膜静脉外直径、视网膜静脉内直径均增宽,静脉血管壁增厚、血管壁横截面面积增大。 Objectives To explore the association between the morphometry of retinal vessel and type 2diabetes mellitus by using full width at half maximum ( FWHM ) that analyze the retinal vascular structure in a spectral-domain optical coherence tomography ( SD-OCT ) image. Methods 47 cases with type 2 diabetes and 52 controls without diabetes were divided into two groups in a retrospective case-control study, and both groups were adopted SD-OCT scanning the temporal superior retinal vessels in the zone B region of the right eye. Two groups were adopted FWHM methods to measure retinal vessel outer diameters, lumen diameters, wall cross-sectional area and, wall/lumen ratio. Results Experimental group within retinal arteriolar outer diameter ( RAOD ) , retinal arteriolar lumen diameter ( RALD ) , retinal arteriolar WT is [ ( 107.47 ± 14.42 ) , (137.65±15.59) , (15.09±2.56)μm] , retinalarteriolarWLRwas (0.28±0.06) , retinalarteriolarWCSAwas (5836.11±1378.10) μm2. Control group RAOD, RALD, retinal arteriolar WT was [ ( 103.32 ± 14.99 ) , ( 133.69 ±16.36 ) , ( 15.18 ±2.17 ) μ m ] , retinal arteriolar WLR was ( 0.29 ± 0.05 ) , retinal arteriolar WCSA was ( 5685.20 ± 1255.26 ) μm2. The experimental group and control group were compared with RAOD (P=0.165) , RALD ( P=0.222 ) , retinal arteriolar WT (P=0.842) , retinal arteriolar WLR (P=0.266) , retinal arteriolar WCSA ( P=0.570 ) , the difference was not statistically statiticant. The retinal venular outer diameter ( RVOD ) , retinal venular lumen diameter ( RVLD ) , retinal venular WT of the experimental group and control group were [ ( 142.74± 24.93 ) , ( 166.73 ± 26.24 ) , ( 12.21 ± 2.07 ) μm ] and [ ( 133.19± 18.76) , (155.24±20.70) , (11.02±2.250) pbm] μm, the difference was statistically significant (P〈0.05) .The experimental group retinal venular WCSA ( 5987.98 ± 1616.32 ) μm2 was greater than the control group ( 5052.38 ± 1506.169 ) μ m2, and the difference was statistically significant ( P=0.004 ) ; no difference was found between the two groups of retinal venular WLR ( P=0.274 ) . Conclusion FWHM algorithm analysis of OCT image is a non-invasive, reliable of retinal vessels. In patients with type 2 diabetes, the retinal venular outer diameter and retinal venular lumen diameter increased, and the wall thickened and the wall cross-sectional area of the venular increased too
出处 《浙江临床医学》 2018年第4期613-615,共3页 Zhejiang Clinical Medical Journal
基金 浙江省科技厅科技项目(2013C33115,LGF18H120002)
关键词 糖尿病 视网膜血管 光学相干断层扫描 图像分割法 Diabetes mellitus Retinal vessels Optical coherence tomography Image segmentation method
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