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    Wider field of view does improve visualization of retinal vascular diseases

     

    Montage of images

    Creating a montage of images is another approach to solving the problem of decreased resolution. “A montage of images has much better fine vascular resolution than fluorescein angiography (FA) images or large single-acquisition images,” Dr. Waheed said.

    She and her colleagues have combined both methods for addressing losses in resolution.

    “We used a higher speed SS-OCT machine and obtained five 12-mm x 12-mm OCTA scans and montaged them together into a single larger scan,” Dr. Waheed said. “This enabled us to see vascular dropout or early neovascularization much faster than they could be seen in a standard 3-mm x 3-mm or 6-mm x 6-mm scan,” Dr. Waheed explained.

    This high level of resolution allows quantification of areas of non-perfusion or ischemia, she added. The areas of resolution then can be seen to match up well with the level of retinopathy.

     

    Lynda Charters
    Lynda Charters is a freelance medical writer.

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