text: <unk>  may be performed to determine the underlying etiology such as arrhythmias and the resultant clots in the heart that may spread to the brain vessels through the bloodstream.
option_0: Ischemic stroke echocardiography
option_1: Carotid artery stenosis electrocardiogram
option_2: Ischemic stroke electrocardiogram
option_3: Ischemic stroke ultrasound
option_4: Ischemic stroke MRI
option_5: Hemorrhagic stroke electrocardiogram
option_6: Encephalopathy electrocardiogram
option_7: Peripheral neuropathy electrocardiogram