刊期详情

Head and Neck Imaging订阅

Comparison of MRA,CTA for the Etiology of the Elderly Posterior Circulation Ischemia

Author：YAN Zhen1 ,QIU Jun-hua2

affiliation：1 Department of Radiology, Qinghai Provincial Hospital of traditional Chinese medicine, Xining,810000,Qinghai Province China; 2 Department of Radiology, Taihe Hospital, Hubei University of Medicine, Shiyan,442000 Hubei Province China

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Abstract

Objective To study the value of CT angiography(CTA) and magnetic resonance angiography(MRA) in the diagnosis of the etiology of the elderly posterior circulation ischemia, compared with digital subtraction angiography(DSA). Methods A retro spective analysis of 35 patients diagnosed posterior circulation ischemic were checked by MRA and CTA.The locations of the lesions shown by various imaging techniques were analyzed and the diagnostic accuracy was calculated. Results A total of 113 diseased vessel segments were identified by DSA. After consensus interpretation, the lesions were located in the vertebral artery(49.6% 56/113), basilar artery(23.0% 26/113), posterior cerebral artery (27.4% 31/113).The diagnostic accuracy of MRA, CTA was 77.0%, 86.7% respectively. Compared with DSA, the Kappa value was 0.70, 0.82 for the diagnosis of the etiology of the elderly posterior circulation ischemia. Conclusions CTA has a higher accuracy than MRA and is recommended over TOF MRA for detection of posterior circulation ischemia.CTA results had a significant effect on patient clinical management.

【Keyword】Posterior Circulation Ischemia; CT Angiography; Magnetic Resonance Angiography

【Chart number】R743；R445.2；R445.3

【Document Identification Number】A

【DOI】10.3969/j.issn.1672-5131.2015.09.016

Chinese journal of CT and MRI

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