Compare in a randomized prospective trial 2 approved treatments of refractory intracranial arterial vasospastic stenosis, chemical angioplasty versus chemical and mechanical angioplasty, using devices already used in clinical practice and CE marked: chemical angioplasty using Nimotop versus chemical and mechanical angioplasty with balloon or adjustable remodeling mesh on brain perfusion evaluated by brain computed tomography (CT) Perfusion~Nowadays, the choice between chemical or chemical and mechanical angioplasty depends on the neurointerventionist for each procedure, no difference in efficiency or safety has been proved and no solid scientific data helps the physician in choosing the correct treatment for each patient.
This is a monocentric randomized prospective trial comparing 2 different endovascular strategies of intracranial arterial angioplasty in case of refractory intracranial arterial vasospastic stenosis :~chemical angioplasty~chemical and mechanical angioplasty