There is a perfusion defect in the right parietal lobe with a wedge shaped area of elevated TMAX, diminished CBF, and relatively preserved CBV. This pattern would typically be expected with an infarct that has salvagable tissue and not much infarct core.
If you follow the right M2 branch seen on image A (red arrow, slice 365/510) and go superiorly, you will notice its cut off on image B (red arrow, slice 367-368/510). This matches nicely the location of the hyperdense M2 on the non-con head CT from Case 9a.
As a bonus, did you catch the incidental mass in the deep lobe of the left parotid gland? It turned out to be a Warthin tumor.