This video shows the vascular pattern seen of the vocal folds in a patient who has benign polyp by using narrow band imaging (NBI) technique. The optical filter technology...
This video shows the vascular pattern seen of the vocal folds in a patient who has benign polyp by using narrow band imaging (NBI) technique. The optical filter technology improves the visibility of capillaries, veins and other subtle tissue structures. Narrow band blue light (415nm) displays superficial capillary networks which appears brown, while green light (540nm) displays subepithelial vessels [vein] which appears cyan in colour. Mucosal inflammation, vascular ectasia and varices, and neo-vascularisation by tumour are some typical lesions seen well by this technique of endoscopic imaging.
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