Endobronchial Optical Coherence Tomography (EB-OCT) Low-risk, bronchoscope-compatible imaging technique.Images large lung tissue volumes (~ 10 cm) in vivo with microscopic resolution (~10 µm). EB-OCT catheter is advanced through the working channel of a bronchoscope to the subpleural lung. Volumetric datasets consisting of cross-sectional images are obtained by helical scanning and pullback of EB-OCT catheter.