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Table 2 Summary of correlation results between plaque wall stress (PWS) and plaque progression from 32 scan pairs using both baseline/follow-up scans and maximum and minimum flow rates in a cardiac cycle

From: Impact of flow rates in a cardiac cycle on correlations between advanced human carotid plaque progression and mechanical flow shear stress and plaque wall stress

Case
#
# of
Data
Pts
PWS
Baseline
Max-Q
PWS
Baseline
Min-Q
PWS
Follow-Up
Max-Q
PWS
Follow-Up
Min-Q
   r p r p r p r p
C1 400 -0.060 0.232 -0.059 0.243 -0.301 < .001 -0.299 < .001
C2 400 0.192 < .001 0.192 < .001 -0.209 < .001 -0.209 < .001
C3 900 0.019 0.564 0.022 0.505 -0.440 < .001 -0.437 < .001
C4 400 0.467 < .001 0.469 < .001 -0.079 0.116 -0.085 0.091
C5 800 0.270 < .001 0.260 < .001 -0.108 0.002 -0.129 < .001
C6 800 -0.039 0.274 -0.023 0.508 -0.279 < .001 -0.275 < .001
C7 800 0.133 < .001 0.145 < .001 -0.179 < .001 -0.166 < .001
C8 800 0.267 < .001 0.263 < .001 -0.133 < .001 -0.141 < .001
C9 600 0.457 < .001 0.457 < .001 0.208 < .001 0.208 < .001
C10 600 -0.297 < .001 -0.297 < .001 -0.622 < .001 -0.622 < .001
C11 700 -0.048 0.208 -0.043 0.252 -0.325 < .001 -0.329 < .001
C12 700 -0.024 0.530 -0.015 0.695 -0.228 < .001 -0.218 < .001
C13 600 -0.119 0.004 -0.120 0.003 -0.229 < .001 -0.242 < .001
C14 1000 -0.098 0.002 -0.097 0.002 -0.341 < .001 -0.342 < .001
C15 1000 0.235 < .001 0.240 < .001 -0.101 0.001 -0.100 0.002
C16 900 -0.037 0.269 -0.037 0.262 -0.302 < .001 -0.307 < .001
C17 800 -0.125 < .001 -0.121 < .001 -0.386 < .001 -0.383 < .001
C18 800 0.030 0.397 0.030 0.396 -0.368 < .001 -0.369 < .001
C19 800 -0.017 0.632 -0.016 0.649 -0.228 < .001 -0.228 < .001
C20 800 0.492 < .001 0.491 < .001 0.253 < .001 0.252 < .001
C21 900 0.097 0.004 0.094 0.005 -0.080 0.016 -0.081 0.015
C22 900 -0.135 < .001 -0.135 < .001 -0.241 < .001 -0.241 < .001
C23 700 0.408 < .001 0.412 < .001 -0.144 < .001 -0.143 < .001
C24 800 0.242 < .001 0.242 < .001 -0.402 < .001 -0.403 < .001
C25 800 0.227 < .001 0.226 < .001 -0.374 < .001 -0.375 < .001
C26 700 0.107 0.005 0.107 0.005 -0.221 < .001 -0.220 < .001
C27 700 0.024 0.531 0.019 0.609 -0.416 < .001 -0.415 < .001
C28 900 0.470 < .001 0.470 < .001 -0.011 0.741 -0.014 0.673
C29 900 0.080 0.017 0.087 0.009 0.013 0.694 0.016 0.639
C30 800 0.110 0.002 0.112 0.002 -0.052 0.140 -0.051 0.152
C31 800 0.127 < .001 0.125 < .001 -0.149 < .001 -0.154 < .001
C32 800 0.119 0.001 0.117 < .001 -0.158 < .001 -0.161 < .001
Positive 18 18 2 2
Negative 5 5 26 26
No Signifi. 9 9 4 4
95% CI (0.039, 0.184) (0.041, 0.185) (-0.273, -0.142) (-0.273, -0.143)
  1. New correlation results from the 32 pairs indicated that advanced plaque progression correlated with PWS negatively using follow-up scans and positively using baseline scans. Flow rates had almost no impact on those correlations.