Inclusion and exclusion criteria for treatment with FRED
| Criteria |
|---|
| In favor of treatment with FRED |
| Intradural incidental aneurysm |
| Intradural or extradural symptomatic aneurysm (mass effect) |
| Supposed difficulty for coil treatment alone (dome-to-neck ratio of <1.2, broad-based aneurysm, fusiform morphology, blisterlike shape) |
| Difficulty or impossibility of neurosurgical clip placement due to aneurysm morphology or anatomic location |
| Acutely ruptured aneurysms without any alternative neurosurgical or endovascular treatment option |
| Aneurysm remnant or reperfusion after endovascular or microsurgical treatment |
| Documented response to medicamentous platelet function inhibition |
| Exclusion for treatment with FRED |
| Intradural aneurysm with a definable neck |
| Intradural bifurcation aneurysm |
| Documented nonresponse to medicamentous platelet function inhibition |
| Patient preference for alternative treatment options |
| Patient preference against any treatment |