Research Article
Effect of Edge-Preserving Adaptive Image Filter on Low-Contrast Detectability in CT Systems: Application of ROC Analysis
Table 1
95% confidence intervals of the differences in average Az values and P-values obtained using MRMC analysis for low-contrast detection task for each target
size (2, 3, 4, 5 mm) using images with and without QDS filter. These results
also list the tube current used for each condition (target size, with or
without QDS filter) to obtain a mean Az value that just exceeded 0.7. In all
cases, “0” was included in the 95% confidence intervals and the P-values
were large.
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