Middle Cerebral Artery Occlusion Dataset

This retrospective study analyzed 422 consecutive cases of acute unilateral MCAO without HAS and 400 healthy controls from January 2015 to June 2023.MCAO was confirmed to be using magnetic resonance angiography (MRA), computed tomography angiography (CTA), or digital subtraction angiography (DSA), which demonstrated arterial truncation with absent distal visualization. Patients underwent NCCT imaging within 24 hours of symptom onset, with no recanalization therapies performed between NCCT and vascular imaging. The time interval between NCCT and vascular imaging did not exceed 72 hours, and all images were deemed suitable for evaluation. Imaging was performed using standardized protocols: NCCT scans were conducted with a Siemens Somatom Definition AS+128 or Siemens third-generation dual-source Force CT, MRI scans were completed on a Siemens 3.0T system with T2-FLAIR, DWI, and 3D-TOF sequences, CTA utilized iodine contrast agents and Bolus-tracking techniques, and DSA was performed with standard femoral artery catheterization and iodixanol contrast injection. Figure 4: Inclusion and exclusion flowchart of 422 cases of HAS negative acute unilateral middle cerebral artery occlusion patients. MRA refers to MR angiography, CTA refers to CT angiography, regions of interest (ROI) refer to the region of interest and HAS refers to the hyperdense artery sign.