Efficacy of a novel auto-fluorescence imaging system with computer-assisted color analysis for assessment of colorectal lesions

Table 1 Diagnostic value of colorectal lesions (for distinguishing neoplastic lesions from non-neoplastic lesions)

	Sensitivity	Specificity	Positive predictive value	Negative predictive value	Accuracy
Diagnosis based on the color analysis	83.9%	82.6%	53.1%	95.6%	82.8%
Flat or depressed type	93.1%	79.0%	94.4%	75.0%	90.1%
Protruded type	66.7%	91.7%	97.6%	35.5%	70.8%
Diagnosis based on the endoscopic findings1	93.5%	97.0%	87.9%	98.5%	96.3%

¹Using magnifying endoscopy with narrow band imaging and chromoendoscopy.

Table 2 Diagnostic value of colorectal lesions (For distinguishing intramucosal lesions/SM superficial cancer from SM deep cancer)

	Sensitivity	Specificity	Negative predictive value	Positive predictive value	Accuracy
Diagnosis based on the color analysis	80.00%	84.40%	29.60%	98.10%	84.10%
Diagnosis based on the endoscopic findings1	60.00%	100%	100%	96.80%	84.10%

¹Using magnifying endoscopy with narrow band imaging and/or chromoendoscopy. Submucosal (SM) superficial cancer: Submucosal invasion was defined as less than 1000 μm from the muscularis mucosae; SM deep cancer: Submucosal invasion was defined as 1000 μm or more from the muscularis mucosae.