Role of bright vessel sign on raw three dimensional arterial spin labeling image in evaluating occlusion of intracranial artery
10.3760/cma.j.issn.1006-7876.2017.05.009
- VernacularTitle:三维动脉自旋标记原始图像高信号血管征评估颅内动脉闭塞的价值
- Author:
Zhihua XU
;
Benqiang YANG
;
Yang DUAN
- Keywords:
Perfusion imaging;
Cerebral arteries;
Cerebral infarction;
Magnetic resonance angiography
- From:
Chinese Journal of Neurology
2017;50(5):354-357
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the role of bright vessel sign (BVS) on raw three dimensional arterial spin labeling (3D ASL) image in evaluating occlusion of intracranial artery. Methods One hundred and twenty-two patients who were highly suspected of acute cerebral infarction were enrolled and analyzed. All patients were performed magnetic resonance scan with diffusion weighted image (DWI), 3D ASL and magnetic resonance angiography (MRA) sequences within 24 hours after admission. The presence or absence of restricted lesion on DWI, BVS and occlusion of intracrainal artery on MRA was reviewed. The sensitivity, specificity, positive predictive value, negative predictive value of BVS and consistency of BVS and MRA in assessing occlusion of intracranial artery were assessed. Results The sensitivity, specificity, positive predictive value and negative predictive value of BVS in assessing occlusion of intracranial artery were 83%, 99%, 95% and 96%, respectively.And the presence or absence of BVS on ASL was highly consistent with MRA in assessing occlusion of intracranial artery (κ=0.86, P<0.01). Conclusion BVS has a good sensitivity and high specificity in identifying occlusion of intracranial artery, and it is highly consistent with MRA.
