Thanks for writing in. I am a medical specialist with an additional degree in Cardiology. I read your question with diligence. Radiologist
who did the scan included the arteries in the field therefore arteriosclerosis
changes of arteries are also seen. This was the cause of embolus which occluded supply to the middle cerebral artery
. Brain is supplied by a circle of Willis
which receives blood from two internal carotid arteries of the left and right side and 2 vertebral arteries of left and right side; this cicle gives rise to two Anterior, two Middle and one posterior cerebral artery
. Here left middle cerebral artery is mainly involved causing damage to part of brain supplied by it.
Sinuses lie in the same bone which encloses the brain that is skull so changes in sinus are also seen as sinusitis but that is separate unrelated problem. For specific answer to a particular question you will have ask a premium question. Good Luck.
With Best Wishes
Dr Anil Grover,
Medical Specialist & Cardiologist
M.B.;B.S, M.D. (Internal Medicine) D.M.(Cardiology)