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Table 1 Aneurysm locations and visibility by intraoperative 3D fluoroscopy before and after clipping. Vessel patency was well assessable in the majority of cases after clip placement. Complete aneurysm occlusion, however, was not reliably assessable in most patients. In patient 11, a neck remnant of the MCA aneurysm and clip displacement from the ICA aneurysm were confirmed by DSA. (Acom = anterior communicating artery, Pcom = posterior communicating artery, MCA = middle cerebral artery, ICA = internal carotid artery, A. = artery, SAH = subarachnoid hemorrhage)

From: 3D rotational fluoroscopy for intraoperative clip control in patients with intracranial aneurysms – assessment of feasibility and image quality

Patient number

Aneurysm (size)

Preoperative visibility

Assessment of vessel patentcy

Assessment of aneurysm/neck remnant

1

Acom, coiled (4 mm remnant), SAH

(+) coil artifact

+

(+) no remnant

Pericallosal A. (3 mm), incidental

+

not treated

not treated

2

Right Pcom (7 mm), incidental

++

++

+ mild carotid stenosis

3

Acom (14 mm), incidental

++

+

-

4

Acom (8 mm), incidental

++

+

+ no remnant

Left MCA (6 mm), incidental

++

+

+ no remnant

5

Left MCA (8 mm), incidental

++

++

+ no remnant

6

Right MCA (7 mm), incidental

++

++

+ no remnant

7

Left MCA (5 mm), SAH

++

++

++ no remnant

8

Right MCA (9 mm), SAH

++

+

+ no remnant

9

Left ICA bifurcation (5 mm), SAH

++

(+)

-

10

Left MCA (9 mm), incidental

++

++

+ neck remnant

11

Left MCA (9 mm), SAH

++

++

+ neck remnant

Left ICA (4 mm)

++

++

+ clip displaced

12

left Pcom (11 mm), incidental

++

+

+ no remnant