1. Findings consistent with right superior MCA territory infarction.
2. Dense vessel sign consistent with large vessel occlusion of the superior division of the right M2 branch.
The patient went on to undergo CTA of the head and neck, and stroke protocol MRI, which confirmed the above findings, with acute thrombotic occlusion of the superior M2 division of the right MCA, corresponding perfusion abnormality, and acute infarction throughout that territory in the distribution described above.
State-of-the-Art Imaging of Acute Stroke. RadioGraphics 2006: http://pubs.rsna.org/doi/10.1148/rg.26si065501
CT Protocol for Acute Stroke: Tips and Tricks for General Radiologists. RadioGraphics 2008: http://pubs.rsna.org/doi/10.1148/rg.286085502
Study description: Head^OUR_PERFUSION_PROTOCOL (Adult)