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Elsbeth J. T. van Zeeburg, B.y. Braaf, Matteo G. Cereda, Jan C. van Meurs, Johannes F. de Boer; Direct Blood Flow Measurements in a Free RPE-Choroid Graft with Phase-Resolved Doppler OCT. Trans. Vis. Sci. Tech. 2015;4(1):2. doi: https://doi.org/10.1167/tvst.4.1.2.
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© ARVO (1962-2015); The Authors (2016-present)
We directly demonstrated the revascularization in a free retinal pigment epithelium (RPE)-choroid graft with direct blood flow detection by experimental phase-resolved Doppler optical coherence tomography (PRD-OCT).
Seven patients with age-related macular degeneration underwent an RPE-choroid graft translocation in a prospective institutional cohort study. Spectral domain optical coherence tomography (SD-OCT) was used to measure the revascularization stage. With PRD-OCT the presence of flow was imaged postoperatively.
The PRD-OCT confirmed flow in three patients when SD-OCT indicated the afferent vessel ingrowth stage, and in all seven patients when the SD-OCT indicated the efferent vessel ingrowth stage.
The PRD-OCT study was able to detect the presence of blood flow in a free RPE-choroid graft. The PRD-OCT findings directly confirmed the revascularization that was otherwise based on the more circumstantial evidence provided by SD-OCT images and angiography.
Translational Relevance: :
The use of both techniques to monitor the revascularization process in a free graft in patients are an interesting example of replacing more invasive by noninvasive techniques. There is potential future use of PRD-OCT for the visualization of vascularization patterns in other pathologies.
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