Michalewska Zofia, Nawrocki Jerzy
Ophthalmic Surg Lasers Imaging Retina. 2018 Feb 1;49(2):111-121. doi: 10.3928/23258160-20180129-05.
To evaluate swept-source optical coherence tomography angiography (SS-OCTA) images in full-thickness macular holes (FTMHs).
SS-OCTA of FTMHs was performed before or after surgery. Vitrectomy with the temporal inverted internal limiting membrane flap technique was used. The authors measured the diameter and area of the foveal avascular zone (FAZ) in superficial and deep retina vasculature.
In 88 patients, two artifact types were observed. First, a hyperreflective circle in the center corresponding to a segmentation failure, as in these cases the segmentation line automatically relocated below the retinal pigment epithelium. Second, in macular holes with cystic spaces around the fovea, detection of blood flow was only partially possible, showing artifacts in the perifoveal vasculature.
The authors present artifacts occurring during visualization of FTMHs with SS-OCTA and the means to correct them. Eyes with decreased postoperative central retinal thickness have an increased FAZ in the deep retinal layer plexus. [Ophthalmic Surg Lasers Imaging Retina. 2018;49:111-121.].
评估扫频源光学相干断层扫描血管造影（SS-OCTA）在全层黄斑裂孔（FTMH）中的图像表现。
对FTMH患者在手术前后进行SS-OCTA检查。采用颞侧倒置内界膜瓣技术进行玻璃体切除术。作者测量了浅表和深层视网膜血管系统中黄斑无血管区（FAZ）的直径和面积。
在88例患者中，观察到两种伪像类型。第一种，中心出现高反射环，对应于分割失败，因为在这些病例中分割线自动重新定位到视网膜色素上皮下方。第二种，在黄斑裂孔周围有囊性间隙的情况下，仅部分能够检测到血流，在黄斑周围血管系统中显示伪像。
作者介绍了SS-OCTA观察FTMH时出现的伪像及其校正方法。术后中心视网膜厚度降低的眼睛，其深层视网膜层丛中的FAZ增大。[《眼科手术、激光与视网膜成像》。2018年；49:111 - 121。]
