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Table 4 Hemodynamic parameter comparisons: PED alone versus PED with coils and PED with coils versus LVIS with coils

From: Hemodynamic analysis for endovascular treatment in small unruptured intracranial aneurysms: a matched comparison study of flow diverter versus LVIS

  PED alone (n = 34) PED with coils (n = 17) P value PED with coils (n = 17) LVIS with coils (n = 51) P value
Velocity on the neck plane
Pre-operation, m/s 0.23 ± 0.13 0.23 ± 0.16 0.542 0.23 ± 0.16 0.26 ± 0.13 0.172
Post-operation, m/s 0.11 ± 0.06 0.11 ± 0.06 0.865 0.11 ± 0.06 0.12 ± 0.10 0.772
Reduction ratio (%) 50.50 ± 17.57 47.03 ± 21.86 0.313 47.03 ± 21.86 55.73 ± 23.28 0.071
Velocity in the aneurysm
Pre-operation, m/s 0.11 ± 0.14 0.07 ± 0.07 0.675 0.07 ± 0.07 0.10 ± 0.09 0.226
Post-operation, m/s 0.04 ± 0.10 0.02 ± 0.02 0.689 0.02 ± 0.02 0.01 ± 0.01 0.069
Reduction ratio (%) 66.75 ± 37.39 78.55 ± 16.81 0.436 78.55 ± 16.81 91.53 ± 8.28 < 0.001*
WSS on the aneurysm
Pre-operation, Pa 3.99 ± 4.39 2.76 ± 2.28 0.617 2.76 ± 2.28 3.56 ± 2.43 0.172
Post-operation, Pa 2.73 ± 6.50 1.50 ± 1.65 0.719 1.50 ± 1.65 0.33 ± 0.47 < 0.001*
Reduction ratio (%) 41.24 ± 50.30 54.17 ± 28.29 0.719 54.17 ± 28.29 91.20 ± 9.82 < 0.001*
  1. WSS wall shear stress