Analysis of FAZ in Diabetic Retinopathy Using OCT Angiography
Quantitative and Qualitative Analysis of Foveal Avascular Zone Characteristics in Different Stages of Diabetic Retinopathy Using Optical Coherence Tomography Angiography (OCT-A)
研究概览
详细说明
OCTA is superior to other retinal imaging techniques like fluorescein angiography(FA) as it does not require dye injection, Intravenous dye injection is time consuming and can have adverse side effects. Furthermore, the edges of the capillaries can become blurred due to dye leakage and imaging of the retina can only be 2D when using FA.
OCTA provides both structural and functional (i.e. blood flow) information in tandem. The "corresponding" OCT b-scans can be co-registered with the simultaneous OCT angiograms so the operator is able to scroll through the OCT angiogram like a cube scan. As a result, the precise location of pathology can be viewed on the corresponding OCT b-scans. This makes OCTA a better tool when detecting the exact location of a retinal pathology.
In diabetic retinopathy OCTA can show choriocapillaris abnormalities and/or retinal microvascular abnormalities such as microaneurysms, vascular remodeling adjacent to the foveal avascular zone (FAZ), enlarged FAZ, and capillary tortuosity and dilation through different stages. OCTA can show smaller vascular changes not detectable by FA.
研究类型
注册 (预期的)
阶段
- 不适用
联系人和位置
学习联系方式
- 姓名:Kareem Md Ali, Resident
- 电话号码:+201091319590
- 邮箱:kmasms2712@gmail.com
研究联系人备份
- 姓名:Ziad Hn El Daly, MD
- 电话号码:+201091319590
参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
Inclusion Criteria:
- Diabetic patients suffering from different stages of diabetic retinopathy.
Exclusion Criteria:
- Other ocular problems affecting vision including glaucoma, cataract, amblyopia, hypertensive retinopathy, vein occlusion and uveitis.
学习计划
研究是如何设计的?
设计细节
- 主要用途:诊断
- 分配:不适用
- 介入模型:单组作业
- 屏蔽:无(打开标签)
武器和干预
参与者组/臂 |
干预/治疗 |
---|---|
其他:一种
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OCT angiography of foveal avascular zone in diabetic retinopathy
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研究衡量的是什么?
主要结果指标
结果测量 |
措施说明 |
大体时间 |
---|---|---|
Mean area of FAZ in various stages of diabetic retinopathy and difference between these groups in superficial and deep capillary plexuses
大体时间:baseline
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analysis of foveal avascular zone in different stages of diabetic retinopathy using OCT angiography
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baseline
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合作者和调查者
调查人员
- 学习椅:Ziad Hn El Daly, MD、Assuit Universoty
出版物和有用的链接
一般刊物
- Kim DY, Fingler J, Zawadzki RJ, Park SS, Morse LS, Schwartz DM, Fraser SE, Werner JS. Optical imaging of the chorioretinal vasculature in the living human eye. Proc Natl Acad Sci U S A. 2013 Aug 27;110(35):14354-9. doi: 10.1073/pnas.1307315110. Epub 2013 Aug 5.
- Choi W, Mohler KJ, Potsaid B, Lu CD, Liu JJ, Jayaraman V, Cable AE, Duker JS, Huber R, Fujimoto JG. Choriocapillaris and choroidal microvasculature imaging with ultrahigh speed OCT angiography. PLoS One. 2013 Dec 11;8(12):e81499. doi: 10.1371/journal.pone.0081499. eCollection 2013.
- NOVOTNY HR, ALVIS DL. A method of photographing fluorescence in circulating blood in the human retina. Circulation. 1961 Jul;24:82-6.
研究记录日期
研究主要日期
学习开始 (预期的)
初级完成 (预期的)
研究完成 (预期的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (实际的)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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OCT angiography的临床试验
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University Hospital Inselspital, Berne招聘中青光眼 | 黄斑变性 | 葡萄膜炎 | 糖尿病性视网膜病变 | 糖尿病性黄斑水肿 | 黄斑水肿 | 视网膜静脉阻塞 | 视神经疾病 | 视网膜脱离 | 黄斑部疾病 | 视网膜疾病 | 视网膜新生血管 | 视网膜动脉阻塞 | 高血压性视网膜病变 | 视网膜水肿 | 视网膜营养不良瑞士
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Optovue完全的