The Experts below are selected from a list of 45 Experts worldwide ranked by ideXlab platform
Giulio Cecchini - One of the best experts on this subject based on the ideXlab platform.
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Anterior and Posterior Ethmoidal Artery Ligation in Anterior Skull Base Meningiomas: A Review on Microsurgical Approaches
World neurosurgery, 2015Co-Authors: Giulio CecchiniAbstract:Objective Anterior skull base neoplastic and vascular lesions can receive significant blood supply from the anterior and Posterior Ethmoidal Artery. Although useful in preoperative embolization of middle meningeal Artery branches, endovascular techniques for the occlusion of anterior Ethmoidal Artery expose the parent vessel, the ophthalmic Artery, to possible embolic complications, which can cause loss of vision. When dealing with anterior fossa giant meningiomas, moreover, it is not always possible to gain direct intracranial access to anterior Ethmoidal arteries because of dimensions and invasiveness of these neoplasms. The aim of this review is to illustrate the anterior and Posterior Ethmoidal Artery anatomy and the microsurgical approaches for extracranial ligation. Methods We performed a literature review of the relevant microsurgical anatomy of these arteries; particular attention is given to anterior cranial fossa and medial orbital wall anatomy. Results Our research found two surgical sites of arterial occlusion that can be best exposed with five microsurgical approaches. Conclusions A combination of different surgical and endovascular techniques before resection of hypervascular giant olfactory groove and planum sphenoidale meningiomas should always be considered. Microsurgical extracranial ligation of anterior and sometimes Posterior Ethmoidal arteries provides a safe and feasible option to limit blood loss during anterior skull base surgery.
Michel Piotin - One of the best experts on this subject based on the ideXlab platform.
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anatomic and angiographic analyses of ophthalmic Artery collaterals in moyamoya disease
American Journal of Neuroradiology, 2018Co-Authors: Thomas Robert, Stanislas Smajda, Gabriele Ciccio, Raphael Blanc, P Sylvestre, Alessio Chiappini, Alexander G Weil, C Chaalala, Michael Reinert, Michel PiotinAbstract:BACKGROUND AND PURPOSE: Moyamoya disease is a progressive neurovascular pathology defined by steno-occlusive disease of the distal internal carotid Artery and associated with the development of compensatory vascular collaterals. The etiology and exact anatomy of vascular collaterals have not been extensively studied. The aim of this study was to describe the anatomy of collaterals developed between the ophthalmic Artery and the anterior cerebral Artery in a Moyamoya population. MATERIALS AND METHODS: All patients treated for Moyamoya disease from 2004 to 2016 in 4 neurosurgical centers with available cerebral digital subtraction angiography were included. Sixty-three cases were evaluated, and only 38 met the inclusion criteria. Two patients had a unilateral cervical internal carotid occlusion that limited analysis of ophthalmic Artery collaterals to one hemisphere. This study is consequently based on the analysis of 74 cerebral hemispheres. RESULTS: Thirty-eight patients fulfilled the inclusion criteria. The most frequently encountered anastomosis between the ophthalmic Artery and cerebral Artery was a branch of the anterior Ethmoidal Artery (31.1%, 23 hemispheres). In case of proximal stenosis of the anterior cerebral Artery, a collateral from the Posterior Ethmoidal Artery could be visualized (16 hemispheres, 21.6%). One case (1.4%) of anastomosis between the lacrimal Artery and the middle meningeal Artery that permitted the vascularization of a middle cerebral Artery territory was also noted. CONCLUSIONS: Collaterals from the ophthalmic Artery are frequent in Moyamoya disease. Their development depends on the perfusion needs of the anterior cerebral Artery territories. Three other systems of compensation could be present (callosal circle, leptomeningeal anastomosis, and duro-pial anastomoses).
Thomas Robert - One of the best experts on this subject based on the ideXlab platform.
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anatomic and angiographic analyses of ophthalmic Artery collaterals in moyamoya disease
American Journal of Neuroradiology, 2018Co-Authors: Thomas Robert, Stanislas Smajda, Gabriele Ciccio, Raphael Blanc, P Sylvestre, Alessio Chiappini, Alexander G Weil, C Chaalala, Michael Reinert, Michel PiotinAbstract:BACKGROUND AND PURPOSE: Moyamoya disease is a progressive neurovascular pathology defined by steno-occlusive disease of the distal internal carotid Artery and associated with the development of compensatory vascular collaterals. The etiology and exact anatomy of vascular collaterals have not been extensively studied. The aim of this study was to describe the anatomy of collaterals developed between the ophthalmic Artery and the anterior cerebral Artery in a Moyamoya population. MATERIALS AND METHODS: All patients treated for Moyamoya disease from 2004 to 2016 in 4 neurosurgical centers with available cerebral digital subtraction angiography were included. Sixty-three cases were evaluated, and only 38 met the inclusion criteria. Two patients had a unilateral cervical internal carotid occlusion that limited analysis of ophthalmic Artery collaterals to one hemisphere. This study is consequently based on the analysis of 74 cerebral hemispheres. RESULTS: Thirty-eight patients fulfilled the inclusion criteria. The most frequently encountered anastomosis between the ophthalmic Artery and cerebral Artery was a branch of the anterior Ethmoidal Artery (31.1%, 23 hemispheres). In case of proximal stenosis of the anterior cerebral Artery, a collateral from the Posterior Ethmoidal Artery could be visualized (16 hemispheres, 21.6%). One case (1.4%) of anastomosis between the lacrimal Artery and the middle meningeal Artery that permitted the vascularization of a middle cerebral Artery territory was also noted. CONCLUSIONS: Collaterals from the ophthalmic Artery are frequent in Moyamoya disease. Their development depends on the perfusion needs of the anterior cerebral Artery territories. Three other systems of compensation could be present (callosal circle, leptomeningeal anastomosis, and duro-pial anastomoses).
Gabriele Ciccio - One of the best experts on this subject based on the ideXlab platform.
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anatomic and angiographic analyses of ophthalmic Artery collaterals in moyamoya disease
American Journal of Neuroradiology, 2018Co-Authors: Thomas Robert, Stanislas Smajda, Gabriele Ciccio, Raphael Blanc, P Sylvestre, Alessio Chiappini, Alexander G Weil, C Chaalala, Michael Reinert, Michel PiotinAbstract:BACKGROUND AND PURPOSE: Moyamoya disease is a progressive neurovascular pathology defined by steno-occlusive disease of the distal internal carotid Artery and associated with the development of compensatory vascular collaterals. The etiology and exact anatomy of vascular collaterals have not been extensively studied. The aim of this study was to describe the anatomy of collaterals developed between the ophthalmic Artery and the anterior cerebral Artery in a Moyamoya population. MATERIALS AND METHODS: All patients treated for Moyamoya disease from 2004 to 2016 in 4 neurosurgical centers with available cerebral digital subtraction angiography were included. Sixty-three cases were evaluated, and only 38 met the inclusion criteria. Two patients had a unilateral cervical internal carotid occlusion that limited analysis of ophthalmic Artery collaterals to one hemisphere. This study is consequently based on the analysis of 74 cerebral hemispheres. RESULTS: Thirty-eight patients fulfilled the inclusion criteria. The most frequently encountered anastomosis between the ophthalmic Artery and cerebral Artery was a branch of the anterior Ethmoidal Artery (31.1%, 23 hemispheres). In case of proximal stenosis of the anterior cerebral Artery, a collateral from the Posterior Ethmoidal Artery could be visualized (16 hemispheres, 21.6%). One case (1.4%) of anastomosis between the lacrimal Artery and the middle meningeal Artery that permitted the vascularization of a middle cerebral Artery territory was also noted. CONCLUSIONS: Collaterals from the ophthalmic Artery are frequent in Moyamoya disease. Their development depends on the perfusion needs of the anterior cerebral Artery territories. Three other systems of compensation could be present (callosal circle, leptomeningeal anastomosis, and duro-pial anastomoses).
Raphael Blanc - One of the best experts on this subject based on the ideXlab platform.
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anatomic and angiographic analyses of ophthalmic Artery collaterals in moyamoya disease
American Journal of Neuroradiology, 2018Co-Authors: Thomas Robert, Stanislas Smajda, Gabriele Ciccio, Raphael Blanc, P Sylvestre, Alessio Chiappini, Alexander G Weil, C Chaalala, Michael Reinert, Michel PiotinAbstract:BACKGROUND AND PURPOSE: Moyamoya disease is a progressive neurovascular pathology defined by steno-occlusive disease of the distal internal carotid Artery and associated with the development of compensatory vascular collaterals. The etiology and exact anatomy of vascular collaterals have not been extensively studied. The aim of this study was to describe the anatomy of collaterals developed between the ophthalmic Artery and the anterior cerebral Artery in a Moyamoya population. MATERIALS AND METHODS: All patients treated for Moyamoya disease from 2004 to 2016 in 4 neurosurgical centers with available cerebral digital subtraction angiography were included. Sixty-three cases were evaluated, and only 38 met the inclusion criteria. Two patients had a unilateral cervical internal carotid occlusion that limited analysis of ophthalmic Artery collaterals to one hemisphere. This study is consequently based on the analysis of 74 cerebral hemispheres. RESULTS: Thirty-eight patients fulfilled the inclusion criteria. The most frequently encountered anastomosis between the ophthalmic Artery and cerebral Artery was a branch of the anterior Ethmoidal Artery (31.1%, 23 hemispheres). In case of proximal stenosis of the anterior cerebral Artery, a collateral from the Posterior Ethmoidal Artery could be visualized (16 hemispheres, 21.6%). One case (1.4%) of anastomosis between the lacrimal Artery and the middle meningeal Artery that permitted the vascularization of a middle cerebral Artery territory was also noted. CONCLUSIONS: Collaterals from the ophthalmic Artery are frequent in Moyamoya disease. Their development depends on the perfusion needs of the anterior cerebral Artery territories. Three other systems of compensation could be present (callosal circle, leptomeningeal anastomosis, and duro-pial anastomoses).