Correlation of internal carotid artery stenosis and risk of stroke inpatients with transient ischemic attacks

XU Fang-yuan; CHEN Shuang; CHEN Xiao-rong; HAN Yun-xue; XU Ying; MAO Yi-hu; YU Lan; WANG Jian-min; YE Chun-mei; YE Chun-yan

Journal of China Clinic Medical Imaging ›› 2011, Vol. 22 ›› Issue (11) : 761-765.

论著

Correlation of internal carotid artery stenosis and risk of stroke inpatients with transient ischemic attacks

XU Fang-yuan1, CHEN Shuang2, CHEN Xiao-rong1, HAN Yun-xue1, XU Ying1,
MAO Yi-hu1, YU Lan1, WANG Jian-min1, YE Chun-mei1, YE Chun-yan1

Author information +

History +

Abstract

Objective: To evaluate the relationship between internal carotid artery stenosis, plaques properties and stroke occurrence in transient ischemic attacks(TIA). Materials and Methods: Conventional CT, CT angiography(CTA) and CT perfusion imaging were performed in 26 patients with clinically diagnosed TIA. The time to peak(TTP), cerebral blood flow(CBF) and cerebral blood volume(CBV) were calculated. The stenosis of carotid artery was also assessed. Results: In 26 cases with TIA, CTA showed 19 cases of internal carotid artery stenosis, mild stenosis in 7 cases(37%), moderate stenosis in 8 cases(42%), severe stenosis in 4 cases(21%). Carotid plaques in 44 places, including 9 mixed plaques, 22 calcified plaques, 7 fibrous plaques, 6 lipid plaques. Old-age incidence was obviously higher than middle-aged group(P<0.05). In 26 cases with TIA, there were 21 normal cases and 5 cases with lacunar infarction, 2 cases had multiple arteries involvement on plain CT scan. Seventeen patients had abnormal CT perfusion and 9 had normal CT perfusion in 26 cases. The TTP of affeted side (11.25±1.94)s compared with that of the contralateral side (8.64±0.96)s was significantly prolonged(t=9.418, P<0.01). The difference of the CBF and CBV was not statistically significant between both sides. Follow-up of 6 months in 3 cases had cerebral infarction. Conclusion: Cerebral apoplexy and internal carotid artery stenosis has close relationship in TIA patients. CT perfusion and CTA can provide valuable diagnostic informations for patients with TIA.

Key words

Ischemic attack / transient / Carotid stenosis / Cerebrovascular accident / Tomography / spiral computed

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

XU Fang-yuan;CHEN Shuang;CHEN Xiao-rong;HAN Yun-xue;XU Ying;MAO Yi-hu;YU Lan;WANG Jian-min;YE Chun-mei;YE Chun-yan. Correlation of internal carotid artery stenosis and risk of stroke inpatients with transient ischemic attacks[J]. Journal of China Clinic Medical Imaging. 2011, 22(11): 761-765