Article Figures & Data
Figures
- Fig 1.
Velocity magnitude (m/s) waveforms for the basilar artery (BA), internal carotid artery, middle cerebral artery, and the anterior cerebral artery (ACA).
- Fig 2.
Flow-velocity streamlines (m/s) for all 9 aneurysms before and after rupture. For each aneurysm, the time-step with the peak velocity–magnitude of the inflow artery is shown.
- Fig 3.
Heart cycle–averaged WSS (Pascal) distributions for all 9 aneurysms before and after rupture.
Tables
- Table 1:
Imaging modalities for all 9 patients before and after rupture, with the time between imaging before and after rupture and the days between hemorrhage and imaging after rupturea
Pt Imaging Modality before Rupture Resolution (mm) Imaging Modality after Rupture Resolution (mm) Time between Imaging before and after Rupture Days between Hemorrhage and Imaging after Rupture 1 3D TOF MRA 0.49 × 0.49 × 1.2 3DRA 0.22 × 0.22 × 0.22 0 yr, 183 days 1 2 3D TOF MRA 0.31 × 0.31 × 1.0 CTA 0.31 × 0.31 × 0.45 0 yr, 72 days 1 3 CTA 0.33 × 0.33 × 1.0 CTA 0.35 × 0.35 × 0.33 2 yr, 323 days 2 4 3D PC MRA 0.78 × 0.78 × 1.0 3DRA 0.25 × 0.25 × 0.25 0 yr, 151 days 0 5 3D TOF MRA 0.45 × 0.45 × 1.0 3DRA 0.39 × 0.39 × 0.39 3 yr, 148 days 0 6 CTA 0.43 × 0.43 × 0.9 3DRA 0.22 × 0.22 × 0.22 0 yr, 34 days 0 7 3D TOF MRA 0.20 × 0.20 × 1.0 3DRA 0.17 × 0.17 × 0.17 4 yr, 1 day 3 8 3D TOF MRA 0.35 × 0.35 × 1.4 3DRA 0.17 × 0.17 × 0.17 0 yr, 14 days 9 9 CTA 0.33 × 0.33 × 1.3 3DRA 0.09 × 0.09 × 0.09 0 yr, 302 days 2 Note:—Pt indicates patient; PC, phase-contrast.
↵a Table adapted from Schneiders et al.14
Pt Location Flow Complexity Flow Stability Inflow Concentration Flow Impingement Geometric Changes Region Size 1 Basilar C-C U-U C-C D-D S-S Noneb 2 AcomA C-C U-U C-C D-Bc S-S Aneurysm displacement (8.9 mm) 3 PcomA S-Cc S-Uc D-D N-N S-S Growth (79%); 1 new lobulation 4 MCA C-C U-U C-C ND-ND S-S Aneurysm displacement (5.8 mm) 5 MCA C-C S-S D-Cc ND-ND S-S Growth (176%) 6 Basilar C-C U-U D-D D-D L-L Noneb 7 PcomA S-Cc U-U C-Dc N-NBc S-S Growth (832%); 1 new lobulation 8 Anterior choroidal C-C S-Uc C-C NB-Nc S-S Growth (70%) 9 Basilar S-Cc S-Uc C-C BD-BD L-L 1 New lobulation Note:—AcomA indicates anterior communicating artery; PcomA, posterior communicating artery.
↵a Flow complexity was characterized as simple (S) or complex (C); flow stability, as stable (S) or unstable (U); inflow concentration as diffuse (D) or concentrated (C); region of flow impingement, as dome (D), body (B), or neck (N); and size of the impingement zone, as small (S) or large (L).
↵b Aneurysm displacement of ≤0.6 mm or not related to mass effect from hematoma; aneurysm growth of ≤40%.
↵c Changed after rupture.
- Table 3:
Mean and maximum oscillatory shear index for all 9 aneurysms before and after rupture
Pt Mean OSI Maximum OSI Before After Δ Before After Δ 1 0.042 0.049 +0.007 (17%) 0.487 0.484 −0.003 (0.6%) 2 0.074 0.044 −0.029 (40%) 0.486 0.479 −0.007 (1.4%) 3 0.025 0.049 +0.024 (95%) 0.423 0.482 +0.059 (13.9%) 4 0.031 0.044 +0.013 (42%) 0.471 0.483 +0.012 (2.5%) 5 0.007 0.040 +0.034 (520%) 0.350 0.469 +0.119 (34.1%) 6 0.065 0.028 −0.037 (57%) 0.489 0.459 −0.030 (6.1%) 7 0.061 0.031 −0.029 (48%) 0.471 0.476 +0.005 (1.1%) 8 0.021 0.018 −0.003 (16%) 0.475 0.452 −0.023 (4.8%) 9 0.025 0.058 +0.034 (137%) 0.473 0.485 +0.011 (2.4%) Mean 0.039 ± 0.023 0.040 ± 0.013 0.458 ± 0.045 0.474 ± 0.012
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