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Technique flow of indocyanine green virtual-assisted lung mapping (ICG-VAL-MAP). A, Planning on virtual bronchoscopy. B, Catheter and dye agent used for bronchoscopic marking. C, Dye injection through a catheter inserted in the working channel of the bronchoscope. D, Marking procedure performed under fluoroscopic confirmation. Because the dye includes a computed tomography contrast agent, the marking is easily observed fluoroscopically (Video 1).
