Different techniques of thrombectomy in ischemic stroke

Several studies confirmed that early recanalization of intracranial arteries during ischemic strokes result in better recovery of these patients after three months of treatment.
Recanalization of cerebral arteries is performed using intravenous tPA or mechanical thrombectomy.
Intravenous tPA injection within 3 hours of ischemic stroke is associated with better outcome in three months follow-up. Intravenous tPA has less effect on large cerebral arteries, like internal carotid arteries. Recent studies showed that mechanical thrombectomy of large cerebral arteries within 6 hours of stroke onset is associated with better outcome three months after operation. Since 2015, mechanical thrombectomy has been entered in first-line of acute phase of ischemic stroke in several guidelines and countries. Mechanical thrombectomy included several different endovascular techniques, as thrombosuction and stent retrieval for clot removal.
Understanding several these different techniques, thier benefits, and their safety could help better selection of suitable method for endovascular treatment of stroke patients.