Article Figures & Data
Figures
- FIG 1.
Flow chart displaying patient recruitment, exclusion criteria, and final study cohort.
- FIG 2.
Examples of different enhancement patterns (AWE and ACE) of coiled intracranial aneurysms. A–D, MR imaging black-blood TSE images of coiled aneurysms (white arrows) precontrast with corresponding postcontrast images in the right lower corner. E, MRA of the aneurysm corresponding to C and F shows MRA of the aneurysm corresponding to D (white arrows). A, No enhancement in a coiled communicating anterior aneurysm. B, Rim artifacts in a treated communicating anterior aneurysm. C, ACE and AWE in a coiled left ICA aneurysm. D, Rim artifacts and ACE in a coiled basilar tip aneurysm. E, AWE and ACE are not necessarily at the same location as aneurysm recanalization. F, Aneurysm recanalization and ACE rather occur next to each other than at the same location in the aneurysm cavity.
- FIG 3.
The incidence of AWE and ACE as percentages compared between groups of different recanalization sizes. A, AWE was significantly more frequent in aneurysms with recanalization of 4–5 mm and >6 mm but not in aneurysms with recanalization of 1–3 mm. B, ACE appeared more frequently in larger aneurysm recanalization without statistical significance (1–3 mm; 4–5 mm; ≥ 6 mm). Double asterisks indicate a P-value of .01 or lower.
Tables
Recanalization (n= 38) No Recanalization (n= 22) P Value Age (mean) 54.0 (SD, 12.9) yr 55.9 (SD, 11.4) yr .583 Female 31 (81.6%) 17 (77.3%) .688 aSAH 14 (23.7%) 13 (59.1%) .095 Anterior circulation 29 (76.3%) 17 (77.3%) .933 Posterior circulation 9 (13.2%) 5 (22.7%) .933 AWE 21 (55.3%) 6 (27.3%) .036 ACE 22 (59.5%) 12 (54.5%) .712 Mean InitMaxDM 7.65 mm (SD, 2.81) mm 6.76 mm (SD, 2.51) mm .2310 Mean CurrMaxDM 9.55 mm (SD, 3.58) mm 7.19 mm (SD, 2.46) mm .005 Mean DiffMaxDM 1.89 mm (SD, 1.71) mm 0.45 mm (SD, 0.67) mm .00004 Mean RecaMaxDM 3.71 mm (SD, 2.16) mm 0 n.d. Note:—InitMaxDM indicates initial maximum diameter of aneurysm; CurrMaxDM, current maximum diameter of aneurysm; DiffMaxDM, difference of initial and current maximum diameters of aneurysm; RecaMaxDM, maximum diameter of aneurysm recanalization; aSAH, aneurysmal subarrachnoid haemorrhage; n.d., not determined.
- Table 2:
Parameters of independent variables of the multivariate regression analysis with the maximum recanalization diameter as a dependent variable
B β T Standard Error CI (95%) P Value Age 0.021 0.109 0.997 0.022 –0.022–0.065 .324 AWE 1.565 0.317 2.668 0.586 0.386–2.743 .01 ACE –0.088 –0.018 –0.151 0.581 –1.257–1.081 .881 aSAH –0.363 –0.074 –0.666 0.545 –1.458–0.732 .509 Sex 1.167 0.195 1.875 0.622 –0.085–2.418 .067 Circulation 1.024 0.176 1.699 0.603 –0.188–2.235 .096 DiffMaxDM 0.793 0.517 4.743 0.167 0.457–1.129 <.001 Note:—DiffMaxDM indicates difference between initial maximum aneurysm diameter and current maximum diameter; B, regression coefficient; T, t-value; aSAH, aneurysmal subarrachnoid haemorrhage.
