Results Detailed images of the basilar artery, lower cerebellar arteries, basilar perforators, vertebrobasilar junction, spinal perforators were obtained (figure 1). Due to the high resolution of the method, the layers of the vessel wall were imaged. What was even more interesting was the ability to image beyond the artery into the structural components of the subarachnoid space with the arachnoid membranes and what we believe to be the arachnoid trabeculae. Venous structures and nerve root origins were also recognized. Conclusion HF-OCT imaging can offer detailed visualization not only of the vessel wall, the branching pattern of basilar and spinal perforators but also of structures of the subarachnoid space impossible to study with other imaging modalities due to inadequate resolution. The clinical implication of such an analysis is yet to be discovered.
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