荧光素血管造影

定义

荧光素血管造影 is an eye test that uses a special dye 和 camera to look at blood flow in the 视网膜 和 脉络. These are the two layers in the back of the eye.

选择的名字

视网膜l photography; Eye angiography; Angiography - 荧光素

如何执行测试

You will be given eye drops that make your pupil dilate. You will be asked to place your chin on a chin rest 和 your forehead against a support bar to keep your head still during the test.

The health care provider will take pictures of the inside of your eye including the back of your eye (视网膜). After the first group of pictures is taken, a dye called 荧光素 is injected into a vein. Most often it is injected at the inside of your elbow. A camera-like device takes pictures as the dye moves through the blood vessels in the back of your eye.

A newer method called ultra-widefield 荧光素 angiography can provide more information about certain diseases than regular 荧光素 angiography.

如何准备考试

You will need someone to drive you home. Your vision may be blurry for up to 12 hours after the test.

You may be told to stop taking medicines that could affect the test results. Tell your provider about any allergies, particularly reactions to iodine.

你必须签署一份知情同意书. You must remove contact lenses before the test.

Tell the provider if you may be pregnant.

考试的感觉如何

When the needle is inserted, some people feel slight pain. 其他人只感到刺痛或刺痛. Afterward, there may be some throbbing.

When the dye is injected, you may have mild nausea 和 a warm feeling in your body. These symptoms go away quickly most of the time.

The dye will cause your urine to be temporarily darker. It may be orange in color for a day or two after the test.

为什么要进行测试

This test is done to see if there is proper blood flow in the blood vessels in the two layers in the back of your eye (the 视网膜 和 脉络).

It can also be used to diagnose problems in the eye or to determine how well certain eye treatments are working.

正常的结果

A normal result means the vessels appear a normal size, 没有新的异常血管, 和 there are no blockages or leakages.

异常结果意味着什么

If blockage or leakage is present, the pictures will map the location for possible treatment.

An abnormal result of a 荧光素 angiography may be due to:

• Blood flow (circulatory) problems, such as blockage of the arteries or veins
• 癌症
• 糖尿病或其他视网膜病变
• 高血压
• 炎症或肿胀 水肿
• 黄斑变性
• Microaneurysms -- enlargement of capillaries in the 视网膜
• 肿瘤
• 视盘肿胀

The test may also be done if you have:

• 视网膜脱离
• 色素性视网膜炎

风险

There is a slight chance of infection any time the skin is broken. Rarely, a person is overly sensitive to the dye 和 may experience:

• 头晕或昏厥
• 口干或分泌唾液增多
• 荨麻疹
• 增加 心率
• 口中有金属味
• 恶心和呕吐
• 打喷嚏

严重的过敏反应很少见.

注意事项

The test results are harder to interpret in people with cataracts. Blood flow problems shown on 荧光素 angiography may suggest blood flow problems in other parts of the body.

参考文献

陈建军，彭明，Haug S，等. 荧光素血管造影: basic principles 和 interpretation. In: Sadda SVR, Sarraf D, Freund KB, et al , eds. 瑞恩的视网膜. 7日艾德. Philadelphia, PA: Elsevier; 2023:chap 1.

Elnahry AG, Ramsey DJ. Automated image alignment for comparing microvascular changes detected by 荧光素 angiography 和 optical coherence tomography angiography in diabetic retinopathy. Semin角膜切削. 2021;36(8):757-764. PMID: 33784213 pubmed.ncbi.nlm.国家卫生研究院.gov / 33784213 /.

Feinstein E, Olson JL, M和ava N. Camera-based ancillary 视网膜l testing: autofluorescence, 荧光素, 还有吲哚菁绿血管造影. 见:Yanoff M, Duker JS编. 眼科学. 5日艾德. Philadelphia, PA: Elsevier; 2019:chap 6.6.

Glacet-Bernard A, Miere A, Houmane B, Tilleul J, Souied E. Nonperfusion assessment in 视网膜l vein occlusion: comparison between ultra-widefield 荧光素 angiography 和 widefield optical coherence tomography angiography. 视网膜. 2021;41(6):1202-1209. PMID: 33105298 pubmed.ncbi.nlm.国家卫生研究院.gov / 33105298 /.

Karampelas M, Sim DA, Chu C，等. Quantitative analysis of peripheral vasculitis, 缺血, 和 vascular leakage in uveitis using ultra-widefield 荧光素 angiography. 我是眼科十大赌博平台排行榜. 2015;159(6):1161-1168. PMID: 25709064 pubmed.ncbi.nlm.国家卫生研究院.gov / 25709064 /.

Taha NM, Asklany HT, Mahmoud AH, et al. 视网膜l 荧光素 angiography: a sensitive 和 specific tool to predict coronary slow flow. 埃及心J. 2018;70(3):167-171. PMID: 30190642 pubmed.ncbi.nlm.国家卫生研究院.gov / 30190642 /.