“…Previous reports have indicated that incidental embolism is not rare, and past history of vasculopathy, amount of contrast medium used, fluoroscopy time, use of additional catheters, procedures of the occlusion test, and performance of endovascular surgery for cerebrovascular disease are risk factors for embolism. 1,4,5,8,9,11,13,16,17,20,21) Angiography of the coronary arteries also carries a risk for cerebral embolism due to the duration of the procedure. 4,15) Diffusion-weighted MR imaging (DWI) allows for the most sensitive early detection of cerebral ischemia within minutes of onset.…”