Digital simultaneous fluorescein and indocyanine green angiography, autofluorescence, and red-free imaging with a solid-state laser-based confocal scanning laser ophthalmoscope

被引:47
|
作者
Jorzik, JJ
Bindewald, A
Dithmar, S
Holz, FG
机构
[1] Univ Bonn, Dept Ophthalmol, D-53127 Bonn, Germany
[2] Univ Heidelberg, Dept Ophthalmol, D-6900 Heidelberg, Germany
关键词
confocal scanning laser ophthalmoscopy; fluorescein angiography; fundus autofluorescence; indocyanine green angiography; red-free imaging; simultaneous fluorescein and indocyanine green angiography;
D O I
10.1097/00006982-200506000-00003
中图分类号
R77 [眼科学];
学科分类号
100212 ;
摘要
Purpose: To describe and to evaluate a novel confocal scanning laser ophthalmoscope (cSLO) for fluorescence angiography, fundus autofluorescence (FAF), and red-free imaging. Methods: Digital infrared, red-free, FAF, fluorescein, and indocyanine green (ICG) angiography images were obtained with a cSLO in 766 patients. An optically pumped solid-state laser generates the excitation wavelength (488 nm) required for red-free, FAF, and fluorescein angiography images. For ICG angiography and infrared imaging, diode laser sources at 790 and 820 nm are used. Further features include an internal fixation control and a focus range of -24 to +30 diopters. Results: High-image quality is achieved with a resolution of up to 5 mu m per pixel in 30-x 30-degree images and allows for accurate delineation of normal and pathologic features. Simultaneous angiography offers high-contrast images. Corresponding display of quasi-simultaneous frames facilitates interpretation. A small focus difference between fluorescein and ICG scans occurs because of chromatic aberrations. Automated alignment and generation of mean images from several single frames allow for acquisition of high-resolution FAF images. Conclusion: Various laser-source related, optical, and electronic innovations improve cSLO fundus imaging for routine clinical application. A solid-state laser has advantages compared to argon gas laser sources, including less space occupation, heat emission, and noise production.
引用
收藏
页码:405 / 416
页数:12
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