ObjectiveTo investigate the clinical value of ABCD3 score combined with CTA in identifying transient ischemic attack (TIA)patients with high risks of cerebral infarction within 7 days. MethodsThe clinical data and CTA findings of 136 patients with TIA were analyzed. Patients were divided into low-risk group (0-3 points), moderate-risk group(4-5 points), high-risk group(6-9 points)and vascular mild group(stenosis＜50%), moderate stenosis group(stenosis 50%-69%), severe stenosis group (stenosis＞70%)according to ABCD3 score and the results of CTA,respectively.The incidence of cerebral infarction was observed after TIA within 7 days. Results29 patients(21.3%) suffered cerebral infarction after TIA within 7 days. The incidence of cerebral infarction in low-risk group (10.2%) was significantly lower than that of medium-risk group (22.5%) and high-risk group (40.5%) (P＜0.05). The incidence of cerebral infarction of artery moderate and severe stenosis group were significantly higher than that of mild stenosis group(χ2=27.827, P=0.000). The incidence of cerebral infarction in moderate-risk group (ABCD3≥4points) and moderate group（artery stenosis≥50%）were significantly higher than that in low-risk group (ABCD3≥3points) and vascular mild group(artery stenosis＜50%) (P＜0.001).To predict risks of early cerebral infarction in TIA patients within 7 days, the AUC of ABCD3 and intra-and extra-cranial artery stenosis were 0.752 and 0.779 (P＜0.001), respectively. ConclusionsABCD3 score is effective to predict risk of cerebral infarction after TIA within 7 days, and the predictive accuracy can be improved by combination of ABCD3 score and the finds of CTA.

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