1 MCQs in Radiology for NEET PG
A 68-year-old man with atrial fibrillation presents with sudden right-sided hemiplegia, global aphasia, and forced gaze deviation to the left. NIHSS is 18. Non-contrast CT head performed 90 minutes after symptom onset shows the finding marked as **A** in the diagram — a hyperdense appearance of the left MCA M1 segment measuring 50–60 Hounsfield units. CT angiography confirms left M1 occlusion. Which of the following best describes the pathophysiological significance of the structure marked **A**?
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