Radiation outcome in mechanical thrombectomy of acute ischemic stroke

Abstract

Objective Mechanical thrombectomy is recommended for acute ischemic stroke (AIS) with large artery occlusion. Radiation during the endovascular procedure would increase the risk of skin diseases. We sought to identify radiation outcomes during mechanical thrombectomy. Methodology We prospectively collected and analyzed radiation parameters during mechanical thrombectomy in 41 patients affected with acute cerebral artery occlusion. Results There were 41 cases (68.73 ± 11.05 years) in this study, with a National Institute Health Stroke Scale (NIHSS) score of 15.66 ± 5.94. The time parameters were recorded as following: 84.45 ± 31.66 min (operation duration), 129.71 ± 81.14 s (angiographic run), 16.02 ± 11.03 min (fluoroscopy) and 18.19 ± 11.14 min (angiographic exposure). The doses produced in the procedure were: 1276.43 ± 1647.56 mGy (shot dose), 607.26 ± 412.34 mGy (fluoroscopy) and 1635.52 ± 593.65 mGy (angiographic exposure). Further analysis discovered no association between NIHSS and these time and radiation parameters (P > 0.05). Conclusion This study provided the description of radiation details during mechanical thrombectomy for acute cerebral artery occlusion. The stroke severity would not influence the procedure parameters.

Thrombectomy in special populations: report of the Society of NeuroInterventional Surgery Standards and Guidelines Committee

“…96 EVT procedures can involve cumulative radiation doses of approximately 1600±500 mGy. 98 However, all available evidence and expert opinion suggest the deterministic risks of radiation exposure should not be taken into consideration when deciding on whether to perform EVT. Notwithstanding, neurointerventionalists should fully use fluoroscopic radiation safety features as endorsed by the Society of Interventional Radiology 99 and according to ALARA principles.…”