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Figure 5 ROC Curves Showing Agreement Between NIRS Signals (as Indicated by Block Chemogram) and Histology

(A) Prespecified end point analysis to discriminate 2-mm blocks containing LCP from blocks containing all other tissue types in blocks with lumen diameters 3 mm. (B) Exploratory analyses conducted in blocks with lumen diameters 2.5 mm. (B1) Discrimination of blocks containing noncalcified LCPs versus blocks without lipid. (B2) Discrimination of LCPs identified by requiring block chemograms that span 3 or more consecutive 2-mm blocks from all other tissue types. AUC = area under the curve; ROC = receiver-operator characteristic; other abbreviations as in Figures 1 and 3.