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Table 3 Hemodynamic parameter comparisons between the two groups

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

  PED group (n = 51) LVIS group (n = 51) P value
Velocity on the neck plane
Pre-operation, m/s 0.23 ± 0.14 0.26 ± 0.13 0.317
Post-operation, m/s 0.11 ± 0.06 0.12 ± 0.10 0.600
Reduction ratio (%) 49.34 ± 18.96 55.73 ± 23.28 0.132
Velocity in the aneurysm
Pre-operation, m/s 0.10 ± 0.12 0.10 ± 0.09 0.853
Post-operation, m/s 0.03 ± 0.09 0.01 ± 0.01 0.037*
Reduction ratio (%) 70.69 ± 32.32 91.53 ± 8.28 < 0.001*
WSS on the aneurysm
Pre-operation, Pa 3.58 ± 3.84 3.56 ± 2.43 0.983
Post-operation, Pa 2.32 ± 5.40 0.33 ± 0.47 0.011*
Reduction ratio (%) 45.55 ± 44.31 91.20 ± 9.82 < 0.001*
  1. WSS wall shear stress