Figure 4From: High definition bronchoscopy: a randomized exploratory study of diagnostic value compared to standard white light bronchoscopy and autofluorescence bronchoscopy Number of sites with suspicious preinvasive lesions. WLB: standard white light bronchoscopy; HD: High Definition bronchoscopy; i-scan1: HD bronchoscopy with surface enhancement; i-scan2: HD bronchoscopy with tone enhancement; AFB: autofluorescence video bronchoscopy dual image mode (SAFE3000).Back to article page