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Fig. 7 —Differences in CT attenuation values between
region-of-interest placement inside plaque. CT attenuation values of 250 and
350 H were chosen as representative levels from our clinical study results.
Wilcoxon's signed rank test revealed that CT attenuation values of plaque near
lumen (dark gray) were overestimated and higher than those at center
(light gray): soft plaque and intracoronary enhancement of 250 H,
soft plaque and 350 H, intermediate plaque and 250 H, and intermediate plaque
and 350 H (p < 0.01).
