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| Correlative study of MSCT and ultrasonography of extracranial carotid artery in cerebral infarction |
| ZHANG Sheng-jian1, YIN Hua-bin2, ZHUANG Yu-zhong2, JIANG Pei2 |
| 1.Department of Radiology, the 2nd People’s Hospital of Hangzhou, Hangzhou 310015, China;2.Department of Radiology, the Fifth People’s Hospital, Fudan University, Shanghai 200240, China |
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Abstract Objective: To assess the value of MSCTA and US for finding carotid artery atherosclerosis plaque，detecting plaque components and estimating the grade of carotid stenosis in patients with cerebral infarction and to discuss the correlation of the two method results. Methods: In 41 patients with cerebral infarction MSCTA and US were performed, 4/41 also had DSA examination. Location and characteristic of plaques, the grade of vessel stenosis were discerned. Coherence statistical method were used to find agreement of the two methods. Results: 68.85%(28/41), 82.93%(34/41) patients were found extracranial carotid, carotid atherosclerotic plaque; MSCTA and US separately detected 76 and 69 plaques; the agreement in detected 60 plaques components which two methods all found was 75%(45/60), the value of Kappa was 0.5915; the overall agreement of carotid stenosis grade obtained by two methods was 78.26%. The value of Kappa was 0.6882. Compared with DSA, 3 carotid occlusions were diagnosed correctly by CTA, but only 1 diagnosed correctly by US, other 2 underestimated as moderate and severe grade stenosis respectively. Conclusions: A close relation existed between carotid atherosclerotic plaque and brain infarction. There were fine agreement of MSCTA and US in detecting plaques components and estimating stenotic grade. MSCTA maybe found more plaques than US and was a more reliable method in diagnosis of carotid occlusion than US.
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Received: 18 March 2006
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2006, Vol. 17 
