Article Figures & Data
Figures
- Fig 1.
Case 1. Images in a 76-year-old woman with a ruptured posterior communicating arterial aneurysm.
A, Roadmap image reveals the bilobulated aneurysm. Note the position of the catheter tip (black dot in the aneurysm).
B, The longest diameter of each lobe was 5 and 4 mm. When a 7-mm × 25-cm two-dimensional GDC-10 (GDC-10–2D) was inserted as the first coil, the coil frame did not occupy the whole inner space of the aneurysm. The coil was retrieved.
C, A 9-mm × 30-cm GDC-10–2D is inserted. The coil frame matches the contour of the aneurysm.
D, Postembolization angiogram shows compact coil packing. No contrast material fills the aneurysmal sac.
- Fig 2.
Case 2. Images in a 63-year-old man with a ruptured anterior communicating arterial aneurysm.
A, Angiogram demonstrates the deeply bilobulated aneurysm
B, The coil frame was made with the first coil, which matched the contour of the aneurysm. Note the position of the catheter tip (arrow).
- Fig 3.
Case 3. Images in a 71-year-old woman with a ruptured left posterior communicating artery aneurysm.
A, Roadmap image shows the bilobulated aneurysm. Note the position of the catheter tip (black dot in the aneurysm).
B, The sum of the longest lengths of the two lobes was more than 10 mm. A GDC-10 coil (10 mm × 30 cm) was selected as the first coil. The frame made by the first coil does not exactly match the contour of the aneurysm. Note the contrast agent retention in the inferior lobe (arrow). Another 10 mm × 30 cm GDC-10 was placed after the first coil was detached.
C, Final fluoroscopic image shows compact coil packing. The space with contrast retention in B is occupied with coils (arrow).
- Fig 4.
Schematic diagrams of the figure-8 technique.
A, A microcatheter is positioned 1–2 mm from the isthmus of the two lobes.
B, After the first coil loop is placed into one lobe, another coil loop is made in another lobe with only further insertion. The catheter tip has a swaying movement during coil delivery. The coil loops may be shaped like a figure 8.
C, Coils are smoothly placed into one lobe and then into the other lobe with just careful further insertion. In general, the subsequent coil has a diameter 1–2 mm smaller than the previous coil.
D, Finally, the deeply bilobulated aneurysm is completely occluded.
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