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FFA与ICGA造影
2022-07-07 21:53:00 【微电子学与固体电子学-俞驰】
造影类型 | 造影对象 | 解剖结构 | 结构结构 血管增生 |
FFA(荧光素钠) | 视网膜血管 | 眼底 | |
ICGA(吲哚青绿) | 脉络膜 | 球外 |
有些患者找了专家,专家回答说没事没有增生,让保持观察、定期随诊。
然后患者就很高兴地回去了,
这是怎么回事呢?
这是因为荧光造影显示没有渗漏,如果有渗透(极大可能是新生血管导致)就走到损伤感光层这一步了。
所以这个时候,最好是自己开始提前控制(例如抗vegf的相关饮食等)
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图1: 左图为FFA图像,可见黄斑区仅表现为少量荧光渗漏,缺少CNV典型表现;右图为ICGA图像,可清晰显现色素上皮脱离和CNV成份,为疾病诊断提供更丰富的信息。
图2: 海德堡HRA
图3: wAMD患者FFA+ICGA同步造影早期像
图4: wAMD患者FFA+ICGA同步造影晚期像
图5: FFA+ICGA同步造影早期显示PCV异常分支血管网和息肉样病灶
图6: 另一患者 ICGA+OCT:ICGA中的息肉样病灶位置在OCT上表现为多出色素上皮脱离(PED),PED切迹(白色箭头)和与息肉对于的PED尖峰(倒三角)可称为“拇指征”[2]。
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