Pilot Study of the Characterization of Subacute Ischemic Cerebrovascular Accidents in the Region of the Middle Cerebral Artery by 3D Ultrasound Localization Microscopy (ULM) with a Research Ultrasound System and Non-marketed 2D Matrix Probe.
The goal of this proof of concept study is to determine if the visualization of the middle cerebral artery and its perforators, through 3D transtemporal ultrasound imaging, is possible thanks to an off-line analysis by 3D ultrasound localization microscopy. Visualization of these vessels would allow us to conclude on the presence, or absence, of an ischemic stroke in the region of the middle cerebral artery. To answer the question asked, 20 participants who suffered a stroke will carry out a transtemporal ultrasound examination specifically for research in the 7 days following his stroke. The data obtained will be analyzed by the CNRS medical imaging laboratory, in order to characterize the presence of a stroke and to compare the data obtained with that of standard examinations (CT and MRI).
• Patient aged 18 and over
• Hospitalized patient with ischemic stroke in the deep territory of the middle cerebral artery
• Patient with lesion observable on MRI
• Patient included between 24 hours and 7 days after the ischemic stroke
• Patient with a temporal window which allows soundproofing of the polygon of Willis and the middle cerebral artery
• Patient having signed free, informed and written consent
• Patient affiliated to a social security system (excluding AME)