Article Figures & Data
Figures
- Fig 1.
A 67-year-old asymptomatic male patient. MDCT axial images before (A) and after (B) administration of contrast material. White arrows indicate the region of interest in the plaque. The red rectangle incorporates the region-of-interest area values, including area; and mean HU values, minimum and maximum.
- Fig 2.
Box-and-whisker plot between the observers for the region-of-interest area quantification.
- Fig 3.
Interobserver variability in the HU plaque enhancement.
- Fig 4.
ROC curve analysis between HU plaque enhancement and cerebrovascular symptoms.
Tables
Criterion (HU value) Sensitivity 95% CI Specificity 95% CI +LR −LR ≥0 100.00 89.6–100.0 0.00 0.0–14.4 1.00 NC >0 88.24 72.5–96.6 50.00 29.1–70.9 1.76 0.24 >9 88.24 72.5–96.6 58.33 36.7–77.9 2.12 0.20 >10 85.29 68.9–95.0 62.50 40.6–81.2 2.27 0.24 >12 82.35 65.5–93.2 66.67 44.7–84.3 2.47 0.26 >13 76.47 58.8–89.2 75.00 53.3–90.2 3.06 0.31 >15a 76.47a 58.8–89.2a 83.33a 62.6–95.2a 4.59a 0.28a >16 70.59 52.5–84.9 87.50 67.6–97.2 5.65 0.34 >17 67.65 49.5–82.6 87.50 67.6–97.2 5.41 0.37 >19 64.71 46.5–80.2 91.67 73.0–98.7 7.76 0.39 >24 20.59 8.7–37.9 91.67 73.0–98.7 2.47 0.87 >27 20.59 8.7–37.9 95.83 78.8–99.3 4.94 0.83 >30 14.71 5.0–31.1 95.83 78.8–99.3 3.53 0.89 >31 5.88 0.9–19.7 100.00 85.6–100.0 NC 0.94 >43 0.00 0.0–10.4 100.00 85.6–100.0 NC 1.00 -
↵a CPE threshold value.
-
Independent Variable Coefficient Standard Error t P R CPE 0.01174 0.00613 1,914 .0315a 0.532 Stenosisb 0.2777 0.12916 2,15 .0366a 0.409 Fatty plaque 0.28471 0.14919 1,908 .0423a 0.449 Age (yr) 0.00115 0.00459 0.25 .8033 0.036 CAD 0.10472 0.11398 0.919 .3628 0.012 Hypertension −0.24982 0.13419 −1.862 .0688 0.02 Dyslipidemia 0.10485 0.12331 0.85 .3993 0.053 Sex (male) 0.12585 0.13605 0.925 .3596 0.262 Current smoker 0.18822 0.12059 1.561 .1251 0.208
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