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Microembolic signals (MES) have been reported to be an independent risk factor for stroke and transient ischemic attack (TIA). We examined the relationship between MES in the internal carotid artery and the occurrence of ischemic stroke in patients with TIA. A total of 67 patients who had a TIA were examined with transcranial Doppler ultrasonography to detect microemboli in the internal carotid artery...