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Table 1 Figure-of-merit values obtained from the JAFROC analysis for three radiologists in detecting lung nodules on conventional gray scale radiography (GSR) and dual-energy radiography with color-representation (DCR)

From: Color radiography in lung nodule detection and characterization: comparison with conventional gray scale radiography

Observer Gray scale radiography Dual-energy radiography with color-representation
1 0.811 0.869
2 0.800 0.757
3 0.821 0.794
Average 0.811 0.807
  1. The difference in figure-of-merit values between GSR and DCR imaging was not statistically significant (p = 0.928)
  2. JAFROC jackknife alternative free-response receiver operating characteristic