Validity about Diameter of Guiding Catheter for Posterior Circulation Derived by MRA Study.

Objective: The development of large-bore aspiration catheters (ACs) has advanced the treatment of mechanical thrombectomy (MT) and their use requires larger guiding catheters (GCs). However, due to the small vessel diameter of the vertebral artery (VA), it can be difficult to cannulate large-bore GC to the VA. This study aims to determine the percentage of VAs that are amenable to GC placement based on the use of a large-bore AC and to clarify the diameters of VAs in the general population using neck MRA.

Correlation between Higher Brain Dysfunction and Cerebral Blood Flow after Carotid Artery Stenting.

Objective: This study investigated the changes in higher brain function and cerebral blood flow (CBF) after carotid artery stenting (CAS), the relationship with CBF, and the impact of high intensities in diffusion-weighted imaging (DWI) after CAS.

Methods: We performed CAS between September 2017 and September 2019 in our department in 88 patients. Patients who did not undergo higher brain function tests according to our protocol or those who did not consent to participate in our study were excluded.