Maxim Mokin1, Muhammad Waqas2,3, Felix Chin2,3, Hamid Rai2,3, Jillian Senko4, Adam Sparks4, Richard W Ducharme4, Michael Springer4, Cesario V Borlongan1, Elad I Levy2,3, Ciprian Ionita5, Adnan H Siddiqui6,7. 1. Department of Neurosurgery and Brain Repair, University of South Florida, Tampa, FL, USA. 2. Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, 100 High Street, Suite B4, Buffalo, NY, 14203, USA. 3. Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo, NY, USA. 4. Jacobs Institute, Buffalo, NY, USA. 5. Canon Stroke and Vascular Research Center, University at Buffalo, Buffalo, NY, USA. 6. Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, 100 High Street, Suite B4, Buffalo, NY, 14203, USA. ASiddiqui@ubns.com. 7. Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo, NY, USA. ASiddiqui@ubns.com.
Abstract
PURPOSE: Few studies have examined the geometry of endovascular mechanical thrombectomy pathways. Here we examine the tortuosity and angulations of catheter pathways from the aortic arch to the termination of the internal carotid artery (ICA) and its association with thrombectomy performance. METHODS: We included 100 consecutive anterior circulation large vessel occlusion thrombectomy patients over 12 months. Computed tomography angiograms (CTA) were used for 3D segmentation of catheter pathway from the aortic arch to ICA termination. Tortuosity index (TI) and angulations of the catheter pathway were measured in a semi-automated fashion. TI and angulation degree were compared between sides and correlated with age and procedural measures. RESULTS: We analyzed 188 catheter pathways in 100 patients. Severe angulation (≤ 30°) was present in 5.8% and 39.4% of common carotid artery (CCA) and extracranial ICA segments, respectively. Five pathways (2.6%) had 360° loop. CCA and extracranial ICA tortuosity had a weak but significant correlation with age (r = 0.17, 0.21, p value = 0.05, 0.02 respectively), time from groin puncture to the site of occlusion (r = 0.29, 0.25, p values = 0.008, 0.026 respectively), and fluoroscopy time (r = 0.022, 0.31, p values = 0.016, 0.001 respectively). There was a significant difference in the pattern of angulation (p value = 0.04) and tortuosity between right and left side in CCA segment (TI = 0.20 ± 0.086 vs. 0.15 ± 0.82, p value < 0.001). CONCLUSIONS: There was a significant difference in CCA angulation between right and left sides. TI of extracranial CCA and ICA correlated with age and influenced time from groin puncture to the occlusion site and total fluoroscopy time.
PURPOSE: Few studies have examined the geometry of endovascular mechanical thrombectomy pathways. Here we examine the tortuosity and angulations of catheter pathways from the aortic arch to the termination of the internal carotid artery (ICA) and its association with thrombectomy performance. METHODS: We included 100 consecutive anterior circulation large vessel occlusion thrombectomy patients over 12 months. Computed tomography angiograms (CTA) were used for 3D segmentation of catheter pathway from the aortic arch to ICA termination. Tortuosity index (TI) and angulations of the catheter pathway were measured in a semi-automated fashion. TI and angulation degree were compared between sides and correlated with age and procedural measures. RESULTS: We analyzed 188 catheter pathways in 100 patients. Severe angulation (≤ 30°) was present in 5.8% and 39.4% of common carotid artery (CCA) and extracranial ICA segments, respectively. Five pathways (2.6%) had 360° loop. CCA and extracranial ICA tortuosity had a weak but significant correlation with age (r = 0.17, 0.21, p value = 0.05, 0.02 respectively), time from groin puncture to the site of occlusion (r = 0.29, 0.25, p values = 0.008, 0.026 respectively), and fluoroscopy time (r = 0.022, 0.31, p values = 0.016, 0.001 respectively). There was a significant difference in the pattern of angulation (p value = 0.04) and tortuosity between right and left side in CCA segment (TI = 0.20 ± 0.086 vs. 0.15 ± 0.82, p value < 0.001). CONCLUSIONS: There was a significant difference in CCA angulation between right and left sides. TI of extracranial CCA and ICA correlated with age and influenced time from groin puncture to the occlusion site and total fluoroscopy time.
Entities:
Keywords:
Angulation; Arterial loop; Endovascular mechanical thrombectomy; Large vessel occlusion; Stroke; Tortuosity index
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