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Consoli A, Cancelliere NM, Charbonnier G, Spears J, Marotta TR, Pereira VM. Perspectives on Remote Robotic-Assisted Stroke Treatment: A Commentary Paper. AJNR Am J Neuroradiol 2024; 45:681-685. [PMID: 38216300 PMCID: PMC11288596 DOI: 10.3174/ajnr.a8085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 10/26/2023] [Indexed: 01/14/2024]
Abstract
The proved feasibility of robotic-assisted endovascular treatment of intracranial aneurysms has stimulated the idea of a potential application of remote robotics for the treatment of acute ischemic stroke. The possibility of developing a more advanced remote-controlled robotic system capable of performing a complete mechanical thrombectomy procedure would help bridge the health care gap of lack of technical expertise in isolated areas. This possibility could allow a more equitable access to mechanical thrombectomy to a larger number of patients and be a breakthrough for acute ischemic stroke care worldwide. Many aspects around the technical, human, financial, and regulatory requirements should be discussed to implement remote robotic-assisted procedures. In this State of Practice article, we aimed to outline the major challenges that must be considered, as well as proposed solutions. However, different solutions may be applied in different health care systems on the basis of the availability of human and financial resources.
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Affiliation(s)
- Arturo Consoli
- From the Diagnostic and Interventional Neuroradiology Department (A.C.), Foch Hospital, Suresnes, France
- Division of Neurosurgery (A.C., N.M.C., G.C., J.S., T.R.M., V.M.P.), Department of Surgery, RADIS Lab, Li Ka-shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Nicole Mariantonia Cancelliere
- Division of Neurosurgery (A.C., N.M.C., G.C., J.S., T.R.M., V.M.P.), Department of Surgery, RADIS Lab, Li Ka-shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Guillaume Charbonnier
- Division of Neurosurgery (A.C., N.M.C., G.C., J.S., T.R.M., V.M.P.), Department of Surgery, RADIS Lab, Li Ka-shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada
- Interventional Neuroradiology Department (G.C.), Besançon University Hospital, Besançon, France
| | - Julian Spears
- Division of Neurosurgery (A.C., N.M.C., G.C., J.S., T.R.M., V.M.P.), Department of Surgery, RADIS Lab, Li Ka-shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Thomas R Marotta
- Division of Neurosurgery (A.C., N.M.C., G.C., J.S., T.R.M., V.M.P.), Department of Surgery, RADIS Lab, Li Ka-shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada
- Division of Diagnostic and Therapeutic Neuroradiology (T.R.M.), Department of Medical Imaging, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Vitor Mendes Pereira
- Division of Neurosurgery (A.C., N.M.C., G.C., J.S., T.R.M., V.M.P.), Department of Surgery, RADIS Lab, Li Ka-shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada
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Rivera R, Cespedes A, Cruz JP, Rouchaud A, Mounayer C. Brain Arteriovenous Malformation In Vitro Model for Transvenous Embolization Using 3D Printing and Real Patient Data. AJNR Am J Neuroradiol 2024; 45:612-617. [PMID: 38637025 PMCID: PMC11288534 DOI: 10.3174/ajnr.a8188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 01/11/2024] [Indexed: 04/20/2024]
Abstract
BACKGROUND AND PURPOSE Transvenous embolization has emerged as a novel technique for treating selected brain AVMs with high reported occlusion rates. However, it requires anatomic and technical skills to be successful and to ensure patient safety. Therefore, training and testing are essential for preparing clinicians to perform these procedures. Our aim was to develop and test a novel, patient-specific brain AVM in vitro model for transvenous embolization by using 3D printing technology. MATERIALS AND METHODS We developed a brain AVM in vitro model based on real patient data by using stereolithography resin 3D printing. We created a closed pulsed circuit with flow passing from the arterial side to the venous side, and we tested the effect of mean arterial pressure on retrograde nidal filling with contrast injections. Transvenous embolization simulations were conducted for each of the 12 identical models divided into 2 groups (2×6). This involved the use of an ethylene-vinyl alcohol liquid embolic agent injected through microcatheters either without or with a coil in the vein (groups 1 and 2, respectively). RESULTS Retrograde contrast advance to nidus was directly related to lower mean arterial pressure. Transvenous embolization tests with a liquid embolic agent adequately reproduced the usual embolization plug and push technique. We found no differences between the 2 group conditions, and additional venous coil neither increased nidus penetration nor reduced injection time in the model (57.6 versus 61.2% nidus occlusion rate, respectively). CONCLUSIONS We were able to develop and test a functional in vitro brain AVM model for transvenous embolization by using 3D printing to emulate its conditions and characteristics. Better contrast penetration was achieved with less mean arterial pressure, and no embolization advantage was found by adding coil to the vein in this model.
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Affiliation(s)
- Rodrigo Rivera
- From the Neuroradiology Department (R.R., J.P.C.), Instituto de Neurocirugia Dr. Asenjo, Santiago, Chile
- CNRS XLIM UMLR 7252 (R.R., A.R., C.M.), Université de Limoges, Limoges, France
| | - Alvaro Cespedes
- Department of Design and Manufacturing (A.C.), Universidad Tecnica Federico Santa Maria, Chile
| | - Juan Pablo Cruz
- From the Neuroradiology Department (R.R., J.P.C.), Instituto de Neurocirugia Dr. Asenjo, Santiago, Chile
| | - Aymeric Rouchaud
- CNRS XLIM UMLR 7252 (R.R., A.R., C.M.), Université de Limoges, Limoges, France
- Neuroradiology Department (A.R., C.M.), CHU Limoges, France
| | - Charbel Mounayer
- CNRS XLIM UMLR 7252 (R.R., A.R., C.M.), Université de Limoges, Limoges, France
- Neuroradiology Department (A.R., C.M.), CHU Limoges, France
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Rivera R, Cespedes A, Cruz JP, Rivera GC, Valencia A, Rouchaud A, Mounayer C. Endovascular treatment simulations using a novel in vitro brain arteriovenous malformation model based on three-dimensional printing millifluidic technology. Interv Neuroradiol 2023:15910199231184605. [PMID: 37350047 DOI: 10.1177/15910199231184605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2023] Open
Abstract
BACKGROUND Brain arteriovenous malformations (bAVM) are complex vascular diseases. Several models have been used to simulate endovascular treatments; thus in vitro models have not been widely employed because it has been difficult to recreate realistic phantoms of this disease. OBJECTIVE To describe the development and evaluate the preliminary experience of a novel bAVM in vitro model for endovascular embolization using millifluidic three-dimensional (3D) printing technology. METHODS We designed a bAVM phantom starting from simple to more complex designs, composed of a nidus, feeding arteries and draining vein. We recreate the design by using millifluidic technology with stereolithography 3D printing. Structural and functional tests were performed using angiographic images and computer flow dynamics. Treatment simulations with ethylene vinyl alcohol were tested using two different microcatheter position techniques. A Likert-scale questionnaire was applied to perform a qualitative evaluation of the model. RESULTS We developed a realistic model of a bAVM with hollow channels. The structural evaluation showed a high precision of the 3D printing process. Embolization tests with the liquid agent gave similar sensations and material behaviour as in vivo cases. There were no significant differences between microcatheter position techniques, thus we observed a trend for better nidus filling with a deeper in-nidus position technique. CONCLUSIONS We were able to create and test a novel bAVM in vitro model with stereolithography 3D printing in resin. It showed a high capacity for simulating endovascular embolization characteristics, with an excellent user experience. It could be potentially used for training and testing of bAVM embolizations.
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Affiliation(s)
- Rodrigo Rivera
- Neuroradiology Department, Instituto de Neurocirugia Dr Asenjo, Santiago, Chile
- CNRS XLIM UMLR 7252, Université de Limoges, Limoges, France
| | - Alvaro Cespedes
- Department of Design and Manufacturing, Universidad Santa Maria, Viña del Mar, Chile
| | - Juan Pablo Cruz
- Neuroradiology Department, Instituto de Neurocirugia Dr Asenjo, Santiago, Chile
| | | | - Alvaro Valencia
- Department of Mechanical Engineering, Universidad de Chile, Santiago, Chile
| | - Aymeric Rouchaud
- CNRS XLIM UMLR 7252, Université de Limoges, Limoges, France
- Neuroradiology Department, CHU, Limoges, France
| | - Charbel Mounayer
- CNRS XLIM UMLR 7252, Université de Limoges, Limoges, France
- Neuroradiology Department, CHU, Limoges, France
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Bravo J, Wali AR, Hirshman BR, Gopesh T, Steinberg JA, Yan B, Pannell JS, Norbash A, Friend J, Khalessi AA, Santiago-Dieppa D. Robotics and Artificial Intelligence in Endovascular Neurosurgery. Cureus 2022; 14:e23662. [PMID: 35371874 PMCID: PMC8971092 DOI: 10.7759/cureus.23662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2022] [Indexed: 11/05/2022] Open
Abstract
The use of artificial intelligence (AI) and robotics in endovascular neurosurgery promises to transform neurovascular care. We present a review of the recently published neurosurgical literature on artificial intelligence and robotics in endovascular neurosurgery to provide insights into the current advances and applications of this technology. The PubMed database was searched for "neurosurgery" OR "endovascular" OR "interventional" AND "robotics" OR "artificial intelligence" between January 2016 and August 2021. A total of 1296 articles were identified, and after applying the inclusion and exclusion criteria, 38 manuscripts were selected for review and analysis. These manuscripts were divided into four categories: 1) robotics and AI for the diagnosis of cerebrovascular pathology, 2) robotics and AI for the treatment of cerebrovascular pathology, 3) robotics and AI for training in neuroendovascular procedures, and 4) robotics and AI for clinical outcome optimization. The 38 articles presented include 23 articles on AI-based diagnosis of cerebrovascular disease, 10 articles on AI-based treatment of cerebrovascular disease, two articles on AI-based training techniques for neuroendovascular procedures, and three articles reporting AI prediction models of clinical outcomes in vascular disorders of the brain. Innovation with robotics and AI focus on diagnostic efficiency, optimizing treatment and interventional procedures, improving physician procedural performance, and predicting clinical outcomes with the use of artificial intelligence and robotics. Experimental studies with robotic systems have demonstrated safety and efficacy in treating cerebrovascular disorders, and novel microcatheterization techniques may permit access to deeper brain regions. Other studies show that pre-procedural simulations increase overall physician performance. Artificial intelligence also shows superiority over existing statistical tools in predicting clinical outcomes. The recent advances and current usage of robotics and AI in the endovascular neurosurgery field suggest that the collaboration between physicians and machines has a bright future for the improvement of patient care. The aim of this work is to equip the medical readership, in particular the neurosurgical specialty, with tools to better understand and apply findings from research on artificial intelligence and robotics in endovascular neurosurgery.
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Cancelliere NM, Lynch J, Nicholson P, Dobrocky T, Swaminathan SK, Hendriks EJ, Krings T, Radovanovic I, Drake KE, Turner R, Sungur JM, Pereira VM. Robotic-assisted intracranial aneurysm treatment: 1 year follow-up imaging and clinical outcomes. J Neurointerv Surg 2021; 14:1229-1233. [PMID: 34911735 DOI: 10.1136/neurintsurg-2021-017865] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 10/06/2021] [Indexed: 11/04/2022]
Abstract
BACKGROUND The use of robotics in medicine may enable increased technical accuracy, reduced procedural time and radiation exposure, and remote completion of procedures. We have previously described the first-in-human, robotic-assisted cerebral aneurysm treatment using the CorPath GRX Robotic System. In this report we discuss our early experiences and outcomes using this robotic device for endovascular treatment of intracranial aneurysms using stent-assisted coil embolization and flow diversion. METHODS The patient and disease characteristics, procedural details, and follow-up imaging and clinical outcomes of consecutive patients undergoing robotically-assisted intracranial aneurysm embolization between November 2019 and February 2020 are presented. RESULTS Six patients underwent robotically-assisted embolization of intracranial aneurysms. Four of the patients were treated with a neck-bridging stent (with or without coiling) and two patients were treated with a flow-diverting stent. Two patients were treated in the subacute period of subarachnoid hemorrhage and four patients were treated electively. All of the procedures could be completed robotically and there was no need for unplanned manual intervention. The technical success rate of the procedures was 100%. There was no morbidity or mortality associated with the procedures. One year follow-up imaging showed that four aneurysms were completely obliterated (Raymond-Roy Occlusion Classification (RROC) class I) and the remaining two were occluded with a residual neck (RROC class II). CONCLUSIONS The Corpath GRX Robotic System demonstrated a precise control over the microcatheter, wire and stent during aneurysm treatment. Robotic neuro-procedures seem to be safe and effective and demonstrate stable occlusion results in the midterm follow-up.
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Affiliation(s)
- Nicole Mariantonia Cancelliere
- Division of Neurosurgery, Department of Surgery, RADIS Lab, Li Ka-shing Knowledge Institute, St. Michael's hospital, Toronto, Ontario, Canada
| | - Jeremy Lynch
- Division of Neuroradiology, Department of Medical Imaging, Toronto Western Hospital, Toronto, Ontario, Canada
| | - Patrick Nicholson
- Division of Neuroradiology, Department of Medical Imaging, Toronto Western Hospital, Toronto, Ontario, Canada
| | - Tomas Dobrocky
- Division of Neuroradiology, Department of Medical Imaging, Toronto Western Hospital, Toronto, Ontario, Canada
| | - Saravana Kumar Swaminathan
- Division of Neuroradiology, Department of Medical Imaging, Toronto Western Hospital, Toronto, Ontario, Canada
| | - Eef Jacobus Hendriks
- Division of Neuroradiology, Department of Medical Imaging, Toronto Western Hospital, Toronto, Ontario, Canada
| | - Timo Krings
- Division of Neuroradiology, Department of Medical Imaging, Toronto Western Hospital, Toronto, Ontario, Canada.,Division of Neurosurgery, Department of Neurosurgery, Toronto Western Hospital, Toronto, Ontario, Canada
| | - Ivan Radovanovic
- Division of Neurosurgery, Department of Neurosurgery, Toronto Western Hospital, Toronto, Ontario, Canada
| | - Kaitlyn E Drake
- Department of Research and Development, Corindus Vascular Robotics, Waltham, Massachusetts, USA
| | - Raymond Turner
- Department of Research and Development, Corindus Vascular Robotics, Waltham, Massachusetts, USA.,Department of Neurosurgery, Prisma Health Upstate, Greenville, South Carolina, USA
| | - John-Michael Sungur
- Department of Research and Development, Corindus Vascular Robotics, Waltham, Massachusetts, USA
| | - Vitor M Pereira
- Division of Neurosurgery, Departments of Surgery & Medical Imaging, St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
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Poupart O, Conti R, Schmocker A, Pancaldi L, Moser C, Nuss KM, Sakar MS, Dobrocky T, Grützmacher H, Mosimann PJ, Pioletti DP. Pulsatile Flow-Induced Fatigue-Resistant Photopolymerizable Hydrogels for the Treatment of Intracranial Aneurysms. Front Bioeng Biotechnol 2021; 8:619858. [PMID: 33553124 PMCID: PMC7855579 DOI: 10.3389/fbioe.2020.619858] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 12/22/2020] [Indexed: 11/13/2022] Open
Abstract
An alternative intracranial aneurysm embolic agent is emerging in the form of hydrogels due to their ability to be injected in liquid phase and solidify in situ. Hydrogels have the ability to fill an aneurysm sac more completely compared to solid implants such as those used in coil embolization. Recently, the feasibility to implement photopolymerizable poly(ethylene glycol) dimethacrylate (PEGDMA) hydrogels in vitro has been demonstrated for aneurysm application. Nonetheless, the physical and mechanical properties of such hydrogels require further characterization to evaluate their long-term integrity and stability to avoid implant compaction and aneurysm recurrence over time. To that end, molecular weight and polymer content of the hydrogels were tuned to match the elastic modulus and compliance of aneurysmal tissue while minimizing the swelling volume and pressure. The hydrogel precursor was injected and photopolymerized in an in vitro aneurysm model, designed by casting polydimethylsiloxane (PDMS) around 3D printed water-soluble sacrificial molds. The hydrogels were then exposed to a fatigue test under physiological pulsatile flow, inducing a combination of circumferential and shear stresses. The hydrogels withstood 5.5 million cycles and no significant weight loss of the implant was observed nor did the polymerized hydrogel protrude or migrate into the parent artery. Slight surface erosion defects of 2–10 μm in depth were observed after loading compared to 2 μm maximum for non-loaded hydrogels. These results show that our fine-tuned photopolymerized hydrogel is expected to withstand the physiological conditions of an in vivo implant study.
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Affiliation(s)
- Oriane Poupart
- Laboratory of Biomechanical Orthopedics, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Riccardo Conti
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, Zurich, Switzerland
| | - Andreas Schmocker
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, Zurich, Switzerland.,Laboratory of Applied Photonics Devices, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Lucio Pancaldi
- Institute of Mechanical Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Christophe Moser
- Laboratory of Applied Photonics Devices, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Katja M Nuss
- Musculoskeletal Research Unit, Department of Molecular Mechanisms of Disease, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Mahmut S Sakar
- Institute of Mechanical Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Tomas Dobrocky
- Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Hansjörg Grützmacher
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, Zurich, Switzerland
| | - Pascal J Mosimann
- Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, Bern, Switzerland.,Department of Diagnostic and Interventional Neuroradiology, Alfried Krupp Hospital, Essen, Germany
| | - Dominique P Pioletti
- Laboratory of Biomechanical Orthopedics, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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McCulloch A, Turcott A, Graham G, Frenklakh S, Cardinal KO. Endothelialized silicone aneurysm models for in vitro evaluation of flow diverters. J Neurointerv Surg 2020; 13:727-731. [PMID: 33106319 PMCID: PMC8292603 DOI: 10.1136/neurintsurg-2020-016859] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/06/2020] [Accepted: 10/06/2020] [Indexed: 01/11/2023]
Abstract
Objective The goal of this work was to endothelialize silicone aneurysm tubes for use as in vitro models for evaluating endothelial cell interactions with neurovascular devices. The first objective was to establish consistent and confluent endothelial cell linings and to evaluate the silicone vessels over time. The second objective was to use these silicone vessels for flow diverter implantation and assessment. Methods Silicone aneurysm tubes were coated with fibronectin and placed into individual bioreactor systems. Human umbilical vein endothelial cells were deposited within tubes to create silicone vessels, then cultivated on a peristaltic pump and harvested at 2, 5, 7, or 10 days to evaluate the endothelial cell lining. A subset of silicone aneurysm vessels was used for flow diverter implantation, and evaluated for cell coverage over device struts at 3 or 7 days after deployment. Results Silicone vessels maintained confluent, PECAM-1 (platelet endothelial cell adhesion molecule 1) positive endothelial cell linings over time. These vessels facilitated and withstood flow diverter implantation, with robust cell linings disclosed after device deployment. Additionally, the endothelial cells responded to implanted devices through coverage of the flow diverter struts with increased cell coverage over the aneurysm seen at 7 days after deployment as compared with 3 days. Conclusions Silicone aneurysm models can be endothelialized and successfully maintained in vitro over time. Furthermore, these silicone vessels can be used for flow diverter implantation and assessment.
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Affiliation(s)
- Alyssa McCulloch
- Biomedical Engineering Department, Cal Poly, San Luis Obispo, California, USA
| | - Ashley Turcott
- Biomedical Engineering Department, Cal Poly, San Luis Obispo, California, USA
| | - Gabriella Graham
- Biomedical Engineering Department, Cal Poly, San Luis Obispo, California, USA
| | - Sergey Frenklakh
- Research and Development, Stryker Neurovascular Intervention, Fremont, California, USA
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