Can a new CT scan see brain stents clearly enough to replace an invasive test?

This study tests whether a new type of CT scan, called ultra-high-resolution photon-counting CT angiography, can accurately check whether stents placed in the brain's venous sinuses are still open. It compares this new scan to the standard CT method and to the more invasive DSA procedure, which is currently the gold standard. The study involves 200 adults who have had such a stent placed and are due for a follow-up scan. The goal is to see if the new CT can provide clear images with fewer metal artifacts, potentially offering a safer and more comfortable way to monitor these stents.