PCA Territory loss of Grey White - Look out For

PCA territory infarct can be subtle on non-contrast CT of the head. Make sure you look in this vascular territory and strutinize the grey white differentiation in all vascular territories, including the PCA and the ACA. 

Hemorrhagic Transformation in an Infarcted Region

Susceptability sequences SWI show diffuse hemmohragic change in an area of infarction correspoiding to DWI restriction.

Stroke Mimics - This was a Tumor!

Stroke Mimic - Not every hypoattenuation on CT is indicative of acute stroke. Given the preservation of cortical gray white in the insula, and in fact cortical expansion, this was a tumor with underlying vasogenic edema producing this appearance. 

Calcified Carotid Plaque - Source of Emboli

Calcified carotid plaques can serve as an embolic source in acute stroke. Although considered more stable than atheromateous plaque, their rupture could lead to vascular occlusion. Given their calcified nature, they are refractory to IV thrombolysis and their retrieval using interventional techniques is more challenging. Given their solid nature, it would not incorporate as a traditional cloth would within the stent retriever and can get be pushed against the intimal wall as the stent opens.