Department of Ophthalmology, Suel Abujamra Institute, São Paulo, Brazil.
Department of Ophthalmology, Faculdade de Medicina da Bahia, Salvador, Brazil.
Eur J Ophthalmol. 2024 Nov;34(6):2020-2024. doi: 10.1177/11206721241235976. Epub 2024 Feb 26.
To describe the peculiarities in imaging acquisition of fourteen patients with choroidal nevus using the Broad Line Fundus Imaging (BLFI) technology.
Single-center, retrospective, cross-sectional analysis.
All images were acquired using the BLFI technology. We have found that choroidal nevus is undetectable in the blue channel (BC) (435-500 nm) and the green channel (GC) (500-585 nm). The only visible changes are related to the drusen, which appeared in BC and GC as light focal dots, correlated to the yellowish foci in the true-color image. On the red channel (RC) (585-640 nm), all lesions revealed the same pattern: a well-defined dark spot, with enhanced contrast, allowing the better visualization, measuring, and characterization of the nevus when compared with the other color channels, including the true-color imaging.
BLFI application in choroidal nevus might be helpful at presentation, refining the diagnostic reliability, and monitoring, as it allows for better detection of alterations in the lesions. The peculiarities of the choroidal nevus are better assessed when using the RC due to its longer wavelength and deeper penetration in the retina and choroid.
描述使用宽线眼底成像（BLFI）技术对 14 例脉络膜黑色素瘤患者进行影像学采集的特点。
单中心、回顾性、横断面分析。
所有图像均使用 BLFI 技术采集。我们发现脉络膜黑色素瘤在蓝通道（BC）（435-500nm）和绿通道（GC）（500-585nm）中不可见。唯一可见的变化与玻璃膜疣有关，这些玻璃膜疣在 BC 和 GC 中呈现为点状的淡斑，与真彩色图像中的黄点状病灶相关。在红通道（RC）（585-640nm）中，所有病变均呈现相同的模式：一个定义明确的暗点，对比度增强，使黑色素瘤的可视化、测量和特征化效果更好，与其他彩色通道（包括真彩色成像）相比。
BLFI 在脉络膜黑色素瘤中的应用有助于提高诊断的可靠性和监测效果，因为它可以更好地检测病变的变化。RC 由于其较长的波长和更深的视网膜和脉络膜穿透深度，因此在评估脉络膜黑色素瘤的特征时效果更好。
