Medical Note

IMPRESSION: 1. No acute infarct or new hemorrhage. 2. Evolving hemorrhagic parenchymal contusions with similar vasogenic edema contributing to unchanged 3 mm midline shift. No herniation. 3. Scattered microbleeds involving the supratentorial cortical/subcortical white matter, corpus callosum, basal ganglia, thalami, midbrain, and pons. Given traumatic injury, findings likely represent some degree of traumatic brain injury, though correlation with prior outside imaging would be useful for differentiating sequela of chronic hypertension and/or underlying cerebral amyloid angiopathy. 4. ASL hyperperfusion in the left posterior cerebral hemisphere raises concern for seizure. Correlate clinically. 5. No venous ASL signal to suggest arteriovenous shunting status post AV fistula embolization. 6. No flow-limiting stenosis. 7. Mild irregularity in the left M2 MCA branches may represent mild vasospasm in the setting of SAH. Correlate clinically. 8. Known left supraclinoid ICA blister aneurysm is not well visualized due to motion.

There is no recent stroke or additional acute bleeding in the brain. The existing blood is continuing to evolve and will take time for the body to absorb. There is no midline shift (movement/displacement) of brain tissue.

最近沒有發生中風或腦部出現額外的急性出血。 現有的血液還在不斷進化，需要時間才能被身體吸收。 腦組織沒有中線移位（運動/移位）。