Endovascular Sequestration of High-Risk Carotid Lesions Using the MicroNET-Covered Embolic Prevention Stent in Consecutive Patients With Symptoms or Signs of Carotid Stenosis-Related Cerebral Injury: An Investigator-Initiated, Intravascular, Ultrasound-Controlled, Multinational, Multispecialty Trial (CGuard OPTIMA)