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Table 1 Summary of correlation results between flow shear stress (FSS) and plaque progression from 32 scan pairs using both baseline and follow-up scans and corresponding to 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
FSS
Baseline
Max-Q
FSS
Baseline
Min-Q
FSS
Follow-Up
Max-Q
FSS
Follow-Up
Min-Q
   r p r p r p r p
C1 400 0.015 0.761 0.025 0.619 0.125 0.013 0.130 0.009
C2 400 -0.108 0.032 -0.110 0.027 0.058 0.247 0.057 0.256
C3 900 0.338 < .001 0.337 < .001 0.401 < .001 0.403 < .000
C4 400 -0.450 < .001 -0.460 < .001 -0.144 0.004 -0.173 0.001
C5 800 0.170 < .001 0.181 < .001 0.432 < .000 0.439 < .000
C6 800 -0.379 < .001 -0.384 < .001 0.123 0.001 0.114 0.001
C7 800 0.117 0.001 0.108 0.002 0.125 < .001 0.126 < .001
C8 800 -0.088 0.013 -0.090 0.011 0.183 < .001 0.181 < .001
C9 600 -0.305 < .001 -0.300 < .001 -0.288 < .001 -0.293 < .001
C10 600 0.392 < .001 0.391 < .001 0.348 < .001 0.352 < .001
C11 700 -0.313 < .001 -0.307 < .001 -0.311 < .001 -0.312 < .001
C12 700 0.005 0.887 0.008 0.834 -0.077 0.043 -0.072 0.056
C13 600 -0.117 0.004 -0.110 0.007 -0.027 0.513 -0.013 0.745
C14 1000 0.188 < .001 0.193 < .001 0.337 < .001 0.340 < .001
C15 1000 0.108 < .001 0.102 0.001 0.257 < .001 0.252 < .001
C16 900 0.007 0.845 -0.010 0.760 -0.146 < .001 0.310 < .001
C17 800 0.188 < .001 -0.199 < .001 0.273 < .001 0.288 < .001
C18 800 0.056 0.116 0.054 0.128 0.154 < .001 0.159 < .001
C19 800 -0.032 0.361 -0.025 0.484 0.274 < .001 0.283 < .001
C20 800 -0.587 < .001 -0.588 < .001 -0.468 < .001 -0.463 < .001
C21 900 0.135 < .001 0.134 < .001 0.139 < .001 0.137 < .001
C22 900 -0.036 0.282 -0.053 0.111 0.006 0.858 0.002 0.947
C23 700 -0.051 0.182 -0.041 0.281 0.263 < .001 0.272 < .001
C24 800 0.028 0.436 0.021 0.548 0.082 0.020 0.081 0.022
C25 800 -0.021 0.547 -0.029 0.421 0.193 < .001 0.203 < .001
C26 700 0.054 0.150 0.058 0.128 0.153 < .001 0.162 < .001
C27 700 -0.382 < .001 -0.389 < .001 -0.044 0.246 -0.037 0.329
C28 900 -0.369 < .001 -0.373 < .001 -0.223 < .001 -0.225 < .001
C29 900 0.207 < .001 0.215 < .001 0.207 < .001 0.205 < .001
C30 800 0.332 < .001 0.336 < .001 0.361 < .001 0.364 < .001
C31 800 -0.420 < .001 -0.418 < .001 -0.357 < .001 -0.354 < .001
C32 800 -0.489 < .001 -0.498 < .001 -0.170 < .001 -0.175 < .001
Positive 10 9 19 20
Negative 12 13 9 7
No Signifi. 10 10 4 5
95% CI (-0.15, 0.037) (-.163, 0.024) (-0.015, 0.155) (0.01, 0.172)
  1. New correlation results from the 32 pairs indicated that advanced plaque progression (WTI) had positive correlation with FSS from follow-up scans. The correlation results using the baseline scan were inconclusive.