Subarachnoid contrast staining not attributable to endovascular therapy.
Saumya Gurbani, Joshua Volin, Taylor Smith et al.
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From the abstract
Contrast staining within the brain refers to the leakage of iodinated contrast material through a disrupted blood-brain barrier, often in the setting of ischemia and endovascular intervention, which can mimic hemorrhage. While commonly seen within the parenchyma, it can be seen in the subarachnoid space especially after endovascular intervention.